New
#11
I'd say NFS SHIFT if your system can handle it, it feels more realistic and precise compared to GRID which has a very Arcade feel with some physics effects tackled on. GRID also looks very blurry, smudged in the graphics department compared to SHIFT which looks very sharp on my system. Personally, I like DiRT 2 the best if you can run the graphics on high with DX11 but it's a more of an off-road racer compared to the other two which are more like GT.
PS. If you plan on buying SHIFT just make sure you get in the bargain bin cause SHIFT 2 Unleashed in soon to be released (if you can wait for it).