Lenovo Y400, i7-3630QM + Nvidia GT750M@RM2799, 4GB, 500GB, W8, 120wPSU, swappable ODD, 2 years warranty
ASUS [Ultrabook]S46CM-WX023V, i5-3317U + Nvidia GT635M + 24GB mSATA + 500GB HDD@RM2399[2kg], 4GB, W7HP
Lenovo Z400, i5-3230M + Nvidia GT740M@RM2099, 4GB, 1TB, W8; 2 years warranty; colors: chocolate
Acer V3-571G-736b8G1T, i7-3630QM + Nvidia GT730M(DDR3) + (1920x1080 IPS) @RM2899[2.6kg], 8GB, 1TB, W8
ASUS A55VJ-SX093H, i5-3210M + Nvidia GT635M@RM2499[2.52kg], 4GB, 750GB, W8; color: black
true that nvidia graphics cards are good for graphical works. for light weight options, you can take a look at lenovo z400 as the weight for this laptop is around 2kg only. if you worry about overheating, then you can get core i5 option.
core i7 will idle at 55-60C which is quite hot. prices are RSP and negotiable.

I think I'll go for lenovo Y400.. backlit keyboard seems tempting, if Z400 has i7 option I'll consider.
if I go for i5.. I think there'll be different in performance (rendering works?)..
that means I must get a laptop cooler fan.. -.-
if i7 does a better job than i5 then I'll definitely choose i7 since I've the budget.. >< but overheat... sighhhhhhh sounds scary...