I was just looking for a temporary card until the prices for the new gen normalize, $50-$60 is too much. I already sold my 6850's at a considerable loss. $350 for a 7870 is robbery.
Yeah i am pretty shure 3 of those 5850's would blow the 7870 out of the water unless you play at really high resolution.
BTW i just noticed that my GTX 480 utilises 1.4GB out of 1.5GB when playing BF3 maxed out @ 1080p