Specifications for local Y400/500 are already out iinm, if you can wait, better wait for those.

If you are buying in a hurry, then the Y580 would be good enough
15.6"
Lenovo Ideapad Y580, i7-3630QM + Nvidia GTX660M + 1920x1080 @RM2999[JBL], 4GB, 500GB(5400rpm), W7HBasic, backlit keyboard, 2 yrs warranty; *W8 (white) version upcoming

*use remaining money to upgrade the warranty to 3 years on-site

16GB should be just around RM250,
Win 8 for RM50, is quite right, $14.99 through the Windows upgrade promo..

If you have a license win7 (or vista, xp, ...), you can upgrade to win8 from microsoft website. The cost of upgrade depends on when you bought the earlier version of win. If you bought it between 2Jun12 to 31Jan13, the cost of upgrade is USD15. If you bought it earlier than the date range, I think is USD50.
The good thing about the upgrade is that you get Win8Pro. So if you have a machine with Win7HBasic, you can spend RM50 and get Pro

The bad:
As far as I know, you need a base OS. That is, suppose you want to do a clean install next time (don't see why since Win8 has reset / restore feature, but just for the sake of example), you need to install your win7 first, then clean install the win8.
So far I have not tried getting a plain win8pro iso and see if the key from upgraded win8pro could activate it 
Have anyone tried?

Good for you man
THe Y500 is quite expensive as well...

But since you have a good budget, perhaps it'll be better to get the RM3k Y580 (unless if Bluray is a MUST), then use the remaining money to get an SSD and also warranty extension.
You will get A LOT more performance boost by upgrading the SSD rather than the RAM 

True. 4gb is actually the sweet spot, dont let ppl tell u otherwise. Try some ram.usage software and see for urself how much u actually use

What's the matter bro?
Don't like it? 

If you get Y580 with W7HB, you will get instant cash rebate of RM50 for you to free upgrade to W8Pro as per Lenovo Windows 7 upgrade promotion in their facebook. 

Bro, Win8Pro is by Microsoft. Win8 has been launched in Oct 2012.
The facebook link earlier is for you to upgrade you Win7HB to Win8Pro for FREE 
Lenovo is giving you RM50, so that you can pay Microsoft RM50 to upgrade your Win7HB to Win8Pro 

You have you wonderful machine. If you buy the preinstalled version, you only get Win8. Now if you choose to upgrade, you get Win8PRO    Enjoy yourself rather than getting pissed. Life is too short 

You are doing engieering and play light gaming. It will NOT fill up the 500G HDD 

Anyway, yes there are specs with 1TB. Come with 8G RAM, and Bluray as well.

Ideapad Y580, i7-3610QM + Nvidia GTX660M (2GB) + (1920x1080) + Bluray@RM3599[JBL], 8GB, 1TB HDD(7200rpm), W7HP, backlit keyboard, 2 years international warranty
Ideapad Y580, i7-3630QM + Nvidia GTX660M (2GB) + (1920x1080) + Bluray@RM3999[JBL], 8GB, 32GB mSATA + 1TB HDD, W7HP, backlit keyboard, 2 years warranty

TJ's recommendation is the most bang for your buck 

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Added on November 20, 2012, 6:01 pm
Just to chip in. You are on the road, and doing presentation? Bringing your own projector all the time?
Not mistaken, XPS 14 only has HDMI and DisplayPort, don't have VGA.
Lenovo T430s may not be as "pretty", but for business and travel, my opinion, no contest 

Lenovo y500 is so tempting!

Any idea when y400 is coming? How about the price range?