For a gamer I'd pick a flavour of GeForce 2 for any budget except sub-$100, and lets face it, if you aren't willing to spend $100 on your video card you aren't much of a gamer
MX, GTS, or Ultra, 32 meg or 64, TV-out or not, and in the case of MX DualDisplay or not, there is a lot of choice with the GF2 family, whichever suits you best.
My favourites are Asus and Hercules/Guillemot.
*Grumbles a lot at this recommendation* I've always liked 3dfx but right now the GeForce2 family really makes the most sense.