well the problem i'm facing at the moment, is that although nvidia's cards have come out better in benchmark testings the boards that support sli are, well crap! most if not all the reviews i've read on them have rated them poorly.

not to mention crossfire is featured on pretty much all the top boards!
the 3870 cards are supposed to be a good card, lower price then the nvidia at £140 and i've seen that it can be run in crossfire with the cheaper 3850 which goes for about £100.

so although i was set to get an nvidia card from looking at the single card bench markings (which was at the most about 15% better) the crossfire option is starting to sway me!!

by the way the 3870x2 i linked earlier is the quickest card on the market, nvidia havent released a rival to it yet.