Q: which is of better quality?
A: FX cards are for engineering...Geforce are for games...8800 factory overclocked (if your not experianced with overclocking them yourself) is the best card (for games) for the price you will pay. XFX has an 8800 on sale right now for $119.00 but it's not overclocked but that really doesn't matter all that much for a person who is not real experianced with the games...