You'll have to compromise either on weight or performance bro
Can consider these:
For performance:
15.6"
Asus G55VW-S1095V, i7-3610QM + Nvidia GTX660M (2GB) + (1920x1080)@3999, 4GB, 1TB(5400rpm), W7HP

Dell Precision M4600, i5-2520M +Nvidia Quadro1000M@RM5650, Win 7 Pro, 3 Years NBD, [Screen Upgrade: HD Multi-Touch, FHD, FHD IPS RGB] [CPU Upgrade: up to i7-2960XM] [GPU Upgrade: Quadro 2000M] [RAM up to 32GB]

MSI GT60, i7-3610QM + Nvidia GTX670M (1.5GB) + (1920x1080;anti-glare)@RM5599[Dyaudio], 8GB, 750GB(7200rpm), W7HP, 2 years warranty, gaming mouse & backpack, Free SteelSeries Siberia V2 headset; backlit keyboard

Sager (Do visit www.illegear.com for customization)
NP9150, i7-2670QM + Nvidia GTX670M + (1920x1080)@RM5199, 8GB, 500GB(7200rpm), FreeDOS [CPU Options: i7-2630M - i7-2960XM][GPU options: GTX675M], color backlit keyboard
NP9270, i7-3820 + Nvidia GTX675M + (1920x1080)@RM7199, 8GB, 500(72200rpm), FreeDOS [CPU Options: i7-3930K - i7-3960X][GPU options: Quadro FX5010M, GTX675M SLI]

For lightness:
15.6"
Asus N56VM-S3022V, i7-3610QM + Nvidia GT630M@RM3599, 4GB, 750GB, W7HP

Dell
XPS 15z, i5-2450M + Nvidia GT525M (1GB) + (1920x1080)@RM3599[2.51kg], backlit keyboard
XPS 15z, i7-2640M + Nvidia GT525M (2GB) + (1920x1080)@RM4099[2.51kg], backlit keyboard
XPS 15z, i7-2640M + Nvidia GT525M (2GB) + (1920x1080) + 256GB SSD@RM4999[2.51kg], backlit keyboard

HP Envy 15-3007TX, i7-2670QM + AMD HD7690M + (1920x1080 Radiance)@RM4999

Sony VPCSE17GG, i7-2630M + AMD HD6630M + (1920x1080)@RM4699[1.96kg], 4GB, 640GB, W7P, color: black

Oh, sorry, usually all the "females" are imposters in the forum 
The Vaio you are referring to is the older brother of this one:
13"
Sony Vaio VPCSA35GG, i7-2640M + AMD HD6630M + (1600x900)@RM4499[1.68kg], 6GB, 750GB, W7P, color: brown, extended battery

Its kind of small for graphic stuffs imho
You were looking for 14-16" notebooks right? All the ones suggested before are better in terms of performance compared to the Vaio

You might want to consider the Dell XPS 15z (dual core i7 variant) then, the spec is more or less similar to the Vaio (weaker GPU though), but comes with FullHD resolution and 8-cell battery- its more or less balanced in terms of performance, potability and user-friendliness~ Oh ya, and the warranty is top-notch as well