Any brands could have lemon unit
The usage only need i3 and HD 4000.

Dell
Vostro 5460, i3-3120M + HD 4000@RM1549[1.54kg], 4GB, 500GB(5400rpm), Ubuntu 12.04, 3 cell; W8SL@RM1,749
Vostro 5460, i3-3120M + Nvidia GT630M@RM1949[1.54kg], 4GB, 500GB(5400rpm), W8SL, 3 cell
Vostro 5460, i5-3230M +Nvidia GT630M@RM1899[1.54kg], 4GB, 500GB(5400rpm), Ubuntu 12.04, 3 cell; W8SL@RM2099

Prices are RSP, negotiable.
Use the remaining budget to extend warranty to 3 years (~ RM250), swap the HDD with SSD (128G ~ RM300+/-, 256G ~ RM600+/-).

Yes, you need reasonably good GPU to take care of the software you use.
Don't worry too much about RAM. 4G stick is ~ RM80, you could upgrade after-market, normally will not void hardware warranty.
The software you use could use some love from i7 quad core, but generally laptop with i7 quad core drain power fast You need to look for laptop with ULV CPU for good battery performance, but ULV CPU is generally less powerful. So that's a trade-off you have to prioritise.
Solidwork / Catia / UG all should run well in W7.
The small mSATA SSD is really hit or miss, but better than nothing. If budget allow, go for full SATA SSD (128G ~ RM300+/-, 256G ~ RM600+/-). Swap HDD with SSD after market normally will not void hardware warranty.

Most tricky requirement is actually the anti-glare screen
Most consumer class laptop come with glossy screen. Among common brands, you only find Samsung consumer models come with matte screen. But Samsung is generally slightly more expensive for the spec.
Business class laptop has matte screen, but those with reasonable GPU is over your budget.
Alternative is for you to get an anti-glare screen filter (~ RM80 - 100). If you apply it well, it will stick properly and the anti-glare effect is pretty good

So, in short, nothing will fully tick all your boxes

Acer
M5-481TG-53316G12, i5-3317U + Nvidia GT640M LE (28nm Kepler) + 128GB SSD@RM2899[1.85kg], 6GB, W7HP (not easy to find now, glossy screen)
V3-571G-736b8G1T, i7-3630QM + Nvidia GT730M(DDR3) + (1920x1080 IPS) @RM2899[2.6kg], 8GB, 1TB, W8 (glossy screen, slightly over budget)

Asus
K46CM-WX177H, i5-3317U + Nvidia GT635M@RM2199[2kg], 2GB, 750GB, W8, OD (glossy screen)

Dell
Vostro 5460, i5-3230M +Nvidia GT630M@RM1899[1.54kg], 4GB, 500GB(5400rpm), Ubuntu 12.04, 3 cell; W8SL@RM2099 (only 1 RAM slot, glossy screen)
Inspiron 15R (Special Edition), i7-3612QM + AMD HD7730M + (1920x1080; anti-glare) + 32GB SSD + 1TB HDD(5400rpm)@RM3199, 8GB, backlit keyboard optional, W8 (slightly over budget)

Lenovo
Y400, i7-3630QM + Nvidia GT750M@RM2499, 4GB, 500GB, FreeDOS, 120wPSU, swappable ODD, 2 years warranty (glossy screen, battery performance not good)
ThinkPad Edge E430, i7-3632QM + Nvidia GT635M + 16GB mSATA+750GB HDD@RM3399[2.2kg], W7P/W8, 4GB, anti-glare (over your budget)
Ideapad Z580, i7-3612QM + Nvidia GT640M@RM2299, 4GB, 500GB(5400rpm), freeDOS, white (glossy screen, getting harder to find)

Samsung
NP500P4C, i7-3610M + Nvidia GT630M@RM2999, 4GB, 500GB, W7HB (not easy to find, slightly over budget)

Prices are RSP, negotiable.

If your sister absolutely must have ultrabook and the brand must be Lenovo, then go for S series instead.
There was widespread report of wifi connectivity issues with current gen U series.

S400, i5-3317U + Intel HD4000 + 24GB mSATA + 500GB(5400rpm)@RM1999[1.8kg], 4GB, W7HB; AMD HD7450M/W8@RM2199

Please note that Y400 has below average battery performance since Nvidia Optimus is disabled (always running on the Nvidia GPU, cannot fall back on Intel HD4000).

Lenovo has not been having good touchpad on Y series and Z series lately. If you don't like it, should not take it
See if you can get it replaced or returned. Good luck

For Photoshop and Sony Vegas, it really depends on the number of effects and how extensive is the job that you are doing. Some using i7 QM and still complain it is not fast enough
Both could make use of powerful CPU, if you do any 3D effects, GPU as well.

A45VS-VX026H, i5-3210M + Nvidia GT645M@RM2199[2.4kg], 2GB, 500GB, W8
K46CM-WX177H, i5-3317U + Nvidia GT635M@RM2199[2kg], 2GB, 750GB, W8, OD

Prices are RSP, negotiable, within your budget.

Think about it
The CPU and GPU in laptop are something that you could NOT upgrade.
The dedicated keypad could be substituted by an off-the-shelf Logitech wireless numpad for ~ RM80.
Where should you spend your money on?

To your last question, no

This post has been edited by nexus2238: May 14 2013, 09:28 AM

I mean there are quite a few reported cases where users are not totally satisfied with the touchpad on the latest Y series and Z series. But it is case by case basis. Some units seems to be ok

For gamers, normally they will go with the more precise mouse when gaming But Zx00 series is aiming for a bit of portability, so I was hoping the touchpad will be better (The touchpad on Lenovo Thinkpad (even the cheapest Edge series) is really good )

Did you see it in the "Official Asus Malaysia Catalogue"?

HP
Envy SpectreXT 13-2215TU, i5-3317U + Intel HD4000 + 128GB SSD@RM2899[1.39kg], 4GB, W8,backlit keyboard

Sony
Vaio SVT13126CVS, i5-3317U + Intel HD4000 + (1366x768;touch) + 128GB SSD@RM2899[1.66kg], 4GB, W8; color: silver; Vaio carrying case
Vaio SVT13136CVS, i5-3337U + Intel HD4000 + (1366x768;touch) + 128GB SSD@RM2999[1.66kg], 4GB, W8; color: silver; Vaio carrying case
(slightly heavier than your requirement, but still .... )

Prices are RSP, negotiable.

You more or less know what are the models you can look at already

Asus
A45VS-VX026H, i5-3210M + Nvidia GT645M@RM2199[2.4kg], 2GB, 500GB, W8

Lenovo
Y400, i7-3630QM + Nvidia GT750M@RM2499, 4GB, 500GB, FreeDOS, 120wPSU, swappable ODD, 2 years warranty
Z400, i5-3230M + Nvidia GT740M@RM2099, 4GB, 1TB, W8; 2 years warranty

Toshiba
Satellite L840-1041X/1041XR/1041XW, i5-3210M + AMD HD7670M@RM1999, 2GB, 500GB, W8SL

Prices are RSP, negotiable.

Light - Vostro 5460, Envy 4-1204tx, Lenovo Z400
Easy to maintain - Envy 4-1204TX, Vostro 5460, ................... Lenovo Z400
Good performance - Lenovo Z400, Envy4-1204TX, Vostro 5460
Good after sale service - Vostro 5460, Envy4-1204TX tie Lenovo Z400
Upgradeable - Envy4-1204TX, Lenovo Z400 (but very hard to access), Vostro 5460 (1 RAM slot)
Newest in market - Vostro 5460, Lenovo Z400, Envy4-1204TX

17" gaming laptops are expensive, mostly out of your budget
RAM you could increase after-market, normally will not void hardware warranty. 8G stick ~ RM170.

Asus
G55VW-S1216H, i7-3630QM +Nvidia GTX660M (2GB) + (1920x1080)@RM3999[3.78kg], 4GB, 1TB(5400rpm), W8

Lenovo
Y500, i7-3630QM + Nvidia GT750M(GDDR5) + (1920x1080)@RM3899, 8GB, 1TB, W8, red backlit, swappable GN37 exGPU & ODD, 120w+170w psu, 2 yrs

MSI
GE60-OND, i7-3630QM + Nvidia GTX660M + (1920x1080; anti-glare)@RM3899, 8GB, 1TB, W8, 2 years warranty, MSI gaming mouse & backpack
GE60-ONC, i7-3630QM + Nvidia GTX660M + (1920x1080; anti-glare) + 64GB SSD + 500GB@RM4099, 8GB, W8, 2 years warranty, MSI gaming mouse & backpack
GT60-ONC, i7-3630QM + Nvidia GTX670MX + (1920x1080;anti-glare)@RM5799[Dyaudio], 8GB, 750GB(7200rpm), W7HP, 2 years warranty, MSI backpack, HDMI cable
GE70, i7-3630QM + Nvidia GTX660M (2GB) + (1920x1080; anti-glare)@RM4299, 8GB, 1TB, W7HP, 2 years warranty, gaming mouse & backpack

www.illegear.com
Illegear RE-15, i5-3210M + Nvidia GTX660M + (1920x1080)@RM3299, 4GB, 500GB(5400rpm), FreeDOS [CPU Options: i5-3210M - i7-3840XM][/color]
Illegear RS-15, i5-3210M + AMD HD7970M + (1920x1080)@RM5299, 8GB, 500GB(5400rpm), FreeDOS [CPU Options: i5-3210M - i7-3940XM][GPU options: GTX680M]
Illegear RE-17, i5-3210M + Nvidia GTX660M + (1920x1080)@RM3499, 4GB, 500(5400rpm), FreeDOS [CPU Options: i5-3210M - i7-3840XM
Illegear RS-17, i5-3210M + AMD HD7970M + (1920x1080)@RM5599, 8GB, 500(5400rpm), FreeDOS [CPU Options: i5-3210M - i7-3940XM][GPU options: GTX680M]

Prices are RSP, negotiable.

Lenovo carry-in warranty service is ok, not particularly good but ok.
Asus Malaysia warranty service track record is very spotty

the GT740M in Z400 is better than the GT640M in A45VS.
Z400 don't have good battery performance. And since it is thin, make sure you have good external cooling solution (cooling pad, table fan ... ) when you game

Asus
A55VJ-SX093H, i5-3210M + Nvidia GT635M@RM2499[2.52kg], 4GB, 750GB, W8

Dell
Inspiron 15R (Special Edition), i5-3210M + AMD HD7730M@RM2199, 4GB, 1TB(5400rpm); backlit keyboard optional, W8

Prices are RSP, negotiable.

http://www.dell.com/my/p/windows-7-laptop-deals

W7 from Dell Malaysia is here

Photoshop could use good CPU. 3D modelling need good GPU. Which leads us to ....

Lenovo
Y400, i7-3630QM + Nvidia GT750M@RM2499, 4GB, 500GB, FreeDOS, 120wPSU, swappable ODD, 2 years warranty
Y400, i7-3630QM + Nvidia GT750M@RM2799, 4GB, 500GB, W8, 120wPSU, swappable ODD, 2 years warranty

Prices are RSP, negotiable.

15" and above laptop are expensive (unless you want FHD screen or the dedicated numpad, there is no good reason to go for 15"), and you budget pretty much means you will get some low end GPU in 15".

Try 14"

Asus
A45VS-VX026H, i5-3210M + Nvidia GT645M@RM2199[2.4kg], 2GB, 500GB, W8

Dell
Inspiron 14R (Special Edition), i5-3210M + Nvidia GT640M(28nm Kepler)@RM2049[2.38kg], 4GB, 500GB(7200rpm), W7HP/W8
Vostro 5460, i5-3230M +Nvidia GT630M@RM1899[1.54kg], 4GB, 500GB(5400rpm), Ubuntu 12.04, 3 cell; W8SL@RM2099

HP
Envy4-1238TX, i5-3337U + AMD HD8750M@RM2099[Beats][1.75kg], 2GB, 500GB(5400rpm), W8

Lenovo
Z400, i5-3230M + Nvidia GT740M@RM2099, 4GB, 1TB, W8; 2 years warranty
Z480, i5-3230M + Nvidia GT640M@RM1999, 4GB, 1TB(5400rpm) W8

Prices are RSP, negotiable.

If you really want 15":

Acer
V3-571G-53212G50, i5-3210M + Nvidia GT630M@RM1999, 2GB, 500GB
Dell
Inspiron 15R, i5-3337U + AMD HD7670M@RM1999[2.32kg], 4GB, 500GB(5400rpm), W8SL
Inspiron 15R (Special Edition), i5-3210M + AMD HD7730M@RM2199, 4GB, 1TB(5400rpm); backlit keyboard optional, W8
Lenovo
Ideapad G580, i5-3210M + Nvidia GT630M@RM1699, 2GB, 500GB, freeDOS, 1 yr warranty
Ideapad Z580, i5-3210M + Nvidia GT640M@RM2299, 4GB, 750GB(5400rpm), W7HB

You need it to be portable, can handle paperwork (need keyboard? You mean MS Office, PDF, that kind of things? Need MS OS?) Mini games (flash games?)

The thing about portable laptop / hybrid / tablet is either it is low price (near your budget) but under-powered (Intel Z2760 Atom) compared to normal 14" laptop, or it is expensive (~ or > RM3k)

Acer
Iconia W510, Intel Z2760 + Intel GMA + 64GB SSD + (1366x768 IPS; touch)@RM1499, 2GB, W8; with keyboard dock@RM2199
Aspire V5-122P, A6-1450 + AMD HD8450G + (1366x768;touch)@RM1499, 6GB, 500GB

Asus
VivoBook S200E, B847 + Intel UMA + (1366x768; touch)@RM1499[1.38kg], 2GB, 500GB, W8; colors: Grey/Pink/White, 2-cell, 1 year

Lenovo
S300, Pentium 997 + Intel HD3000 @RM1199[1.8kg], 2GB,500GB(5400rpm), freeDOS; W7HB/W8@RM1399, no ODD, 1 yr warranty
S300, 1007U + Intel HD @RM999[1.8kg], 2GB,500GB(5400rpm), freeDOS; W8@RM1199

Prices are RSP, negotiable.

This post has been edited by nexus2238: May 22 2013, 04:57 PM

If you are not doing any major work on MS Office (e.g. running big models on Excel, or some big Access Database ... ), any of the models suggested is good enough (the one with Z2760 CPU may lag a bit if you have a few MS Office apps run concurrently, but it is compensated by the SSD).

A CPU (central processing unit) is basically the heart of a laptop, it is THE component of the computer that do all the running of apps

I think since you need to do paperwork, a laptop with a keyboard is a good idea For a tablet, you need to make sure it can run your MS Office