currently im building a new gaming rig, and i have chosen 2x evga geforce 9800gtx+ for about 130 a card without tax... i was looking at the gtx series, the 275 or higher... which would be better for the price? i plan on gaming with this rig for the next 2 years without having to upgrade the gpus.. figured dual cards would be better in the long run for the newer more demanding games that are to come.