Personaly.. I prefer 3dfx.. but there no longer. I\'m on a Geforce card now, When i next update i\'ll get whatever is the fasted card at the time, GF or Radeon, they are also not brands. They\'re chipset names. Nvidia or ATI are the brands.
In brandname cards, I prefer Diamondmm for 3dfx cards, Leadtek for GF cards and ATI for Radeon cards.