i'm just thinking of replacing my video card. What video card is most compatible with hackintosh?
Check out the wiki for compatible graphics cards. http://www.tonymacx86.com/wiki/index.php?title=Graphics_Card_Database
It all depends on your day-to-day needs. There really is no "best" card in my opinion.
Also, most everyone here has their video card as part of their signature or profile so that can also help you see who is running what.