im looking at getting 1 gtx 275, 2 gtx 260s, or 1 gtx 285. i can get the 260s for about the same price as one 285 but they might run hot on my mobo (asus p5n-d) because they would sit really close. im not sure if the gtx 285 is worth an extra $100 over the 275. i think the 260s would probly have the best performance but im not sure. other possibility is 2 gtx 275s but thats an extra $100 at least over the gtx 285 and im not sure they have much more performance than 2 260s. thoughts?