NVIDIA Still the Best Bet on Linux, ATI Catching Up ThoughThu 03 January 2008
Comparing the two binary drivers, on several Linux operating systems over the past year, I have to strongly recommend NVIDIA based graphics cards over AMD/ATI. While RadeonHD is progressing fast and AMD's recent opening of their documentation should be great in the future, right now fglrx is terrible compared to nvidia's package. You have to cross your fingers from version to version and hope Xorg still works after updates.
Some major ATI issues: