What's your budget? All of the cards in the X1950 series are really good. If you've got around $200, the X1950PRO would be good. If you have about $250, the X1950XT would be much better. And don't bother with the X1950XTX. It's not much better than the X1950XT, and for a mere $20-30 more (not too much considering the ~$400 price), you could grab an 8800GTS, a far superior card. And if you have tons of money to blow, say over $600, the 8800GTX is the better than all of the above cards, but you'd definitely be fine with an X1950XT or PRO.