It's time once again to upgrade video cards, since i am a bang for buck kind of gu, i take my time making these decisions, and usually i can come up with a pretty logical conclusion. I currently have a 7600gt which has worked well up until now I ran the bioshock demo. Now understand that i am just a casual gamer, i play maybe once a week or two and i most mostly order games such as freelancer, freespace 2, lord of the rings, etc, but i am really digging bioshock. So far im thinking of 8600gt 256 mb, 7900gs 256 mb, radeon 1950xt 512mb, and 2600 pro or xt(512mb) . I have x2 5600 2gb ddr, and a 600 watt psu. Thanks in advance for your responses.