I'm using a V770 Ultra. The planes and everything look quite a bit better on it versus my old video card. (Intel i740 8mb card.) My framerate also doubled from 35 fps to 60+ at times. The difference is the 32 bit color, voodoo can't go above 16 bit. From most of the benchmarks I've seen, the ultra tnt2 chipset is faster than the voodoo 3 chipset as well. The only thing that I noticed about the v770 is it's lack of TV out. In fact all it has is a VGA adapter, so if you need a TV out, you may want to look elsewhere. I've also heard that drivers for voodoo cards are better for AMD products as well, so if you have a k6-2 or 3 you may want to stick with your voodoo. Otherwise, if you look at the framerate thread around, the V770 and GeForce are the fastest cards available for AH.
bloom25
THUNDERBIRDS