Help me choose! I was going to buy the Vapor-X 5870 from Sapphire, but then I realized something about all PC games. Everything has that nVidia logo, "The way it's meant to be played". It got me wondering if all the most High-End PC games are made for nVidia video cards. And I also noticed that every time I download a PC demo, while installing it, it makes me install nVidia drivers like PhysX and other stuff. So perhaps nVidia cards are best for PC games? As if they're made for nVidia chipsets. If this is true, then might as well convert to nVidia? or if it's not true, which of these two cards is the ultimate choice for me? Just need second opinions.