Video Cards : ATI Vs. GeForce

[PureEuroM3]

I need a new Video card just because my old one is really starting to crap out on me and the movements of online games are choppy and slow. The cards I am looking at are:
-GeForce 6800 Xtreme
-ATI Radeon X700 Pro
-ATI X1300 Pro
They are all AGP and 256 but which do you guys think would be the best for gaming and just overall a better buy?

I have alot of good things about the GeForce with some people saying the Fan is noisy. I have read very little about the ATI because of the lack of reviews available. I have heard decent, not great, reviews of them however. My top choice as of now is the GeForce but I am always open for more opinions.