Hard to say, your prices are very inflated.
Sapphire just released the 5850 Xtreme for $150 in NA, it's basically the same as a 460 1gb performance wise.
basically the same performance wise? See, I was all set to get a GTX 460 1 gig because I heard that Nvidia had better drivers for gaming in Stereoscopic 3D than AMD, but then I found out about that $150 5850, and I had heard that the 5850 was considerably better than a 460, but you're saying the performance is about the same.
This makes me think I should jump back on the Nvidia train for the better S3D drivers and compatibiltiy with 3DTV's (Nvidia 3DTV Play).