I had the exact same needs along with photography and image editing ( needed a screen with good viewing angles and colors ) .
I had selected - 15 r Se Dell , 17 r SE dell i7 , Sony 15116 gnb ( has IPS display ) .
After around 3 months of back n forth I got the Dell 17r Special edition i7 processor .
It cost me a bomb , but took it on EMI -
It has a grrreat screen , colors looks vivid and the 3d screen with 3d glasses is the icing on the cake
i7 processor
GT 650 M DDR5 Graphics card
8 GB Ram
all great for rendering and real time viewport processing - Zbrush, Mudbox , Maya , Max , Mari , Photoshop functions with buttery smoothness
If you are looking at a long term investment go for this one .
P.S. - I had the Samsung NP-550P5C but had got replacements twice and yet new issues came popping up so had to get a refund . And the screen wasn't goood for my purposes cuz the colors were muted and the viewing angles were not satisfactory for image editing