Many choices here since you are not using it for gaming
14"
Acer
V5-473PG-54204G50, i5-4200U + Nvidia GT740M +(1366x768;touch)@RM2299, 4GB, 500GB,W8 *no OD
Asus
A450CC, i5-3337U + Nvidia GT720M@RM1999[2kg], 4GB, 750GB, W8; 4-cell; colors: black/red/white
K451LB-WX071H, i5-4200U + Nvidia GT740M@RM2299, 4GB, 750GB, W8

PRO45VJ-V0047X, i5-3230M + Nvidia GT635M@RM2399[2.4kg], 4GB, 500GB, W7P
PRO45VJ-V0056X, i3-3120M +Intel HD4000@RM1999[2.4kg], 4GB, 500GB, W7P
Dell
Inspiron 14, i5-4200U + Nvidia GT720M@RM1699 [1.99kg], 4GB, 500GB(5400rpm), Linux, 6 cell; W8.1SL@RM1899
Inspiron 14R, i3-4010U + Intel HD4400 @RM1599 [2.32kg], 4GB, 500GB(5400rpm), W8.1 , 4 cell

HP
Pavilion 14-N075TX, i3-3217U + AMD HD8670M@RM1649[2.03kg], 4GB, 500GB, W8
Pavilion 14-N059TX, i5-4200U + Nvidia GT740M@RM2099[2.03kg], 4GB, 750GB, W8; colors: silver/black

Lenovo
Ideapad Flex 14, i5-4200U + Nvidia GT720M +(1366x768; touch) + 8GB SSHD + 500GB HDD@RM2299, 4GB, W8, 2 yrs; colors: black/orange
S410p, i5-4200U + Nvidia GT720M +(1366x768; touch)@RM2199[2.1kg], 4GB, 500GB, W8, 2 yrs
S410p, i5-4200U + Nvidia GT720M +(1366x768; touch)@RM2399[2.1kg], 4GB, 500GB, W8, 2 yrs

Sony
Vaio SVF14318SG, i5-4200U + Nvidia GT740M + (1366x768;touch)@RM2399, 4GB, 500GB, W8SL; colors: white

Toshiba
Satellite L40-AS109Xb/G/W, i5-3337U + Nvidia GT740M@RM2199[Onkyo], 4GB, 750GB, 3 years local warranty; colors: Blue/gold/white
Satelite L40-AS125XG/B/W, i5-4200U + Nvidia GT740M@RM2299[Onkyo], 2GB, 750GB, 3 years local warranty, W8; colors: Gold/blue/white

* Prices in RRP ya
* Use remaining budget to extend warranty to 3 years (if applicable). Can consider upgrading to 8GB RAM too if you want- will help in multitasking
* Just choose the one that you like the most. But in terms of stock performance, the Lenovo Flex 14 will be relatively faster because of the SSHD

i think i do remember you, girl. anyway :

Dell
Inspiron 14, i5-4200U + Nvidia GT720M@RM1699 [1.99kg], 4GB, 500GB(5400rpm), Linux, 6 cell; W8.1SL@RM1899

save back your budget, since your usage are more related to normal ones. if you want more lighter and thinner, can go for this :

Dell
Vostro 5470, i3-4010U + Intel HD4400@RM1899, 4GB, 500GB(5400rpm), W8, 3-cell

prices are RRP and negotiable. use the remaining budget to upgrade RAM and extend warranty to 3 years.
and exchange HDD to SSD if you want blazing fast performance.

Just want to add that the Vostro series still suffers from weak WiFi I think
Sad, but its true.. 
I don't think the Flex 14 can last 8 hours haha
4-5 hours maybe with its 4-cell battery (iirc)
But its still a great ultrabook.
Well, no point getting the Flex 14 if you intend to throw in an 128GB SSD in the 1st place! haha