Should I sell my 5970+5870+5850 and purchase 3 2GB E6 5870s or purchase +1 5970?

[Apocalypse23]

Thanks for the suggestion guys, would anyone recommend me an affordable 30" IPS screen? Primary purpose will be for gaming @2560x1600. This will be a future upgrade.

 

[Hauk]

OP, regarding frame buffer, here's Metro 2033 @ 1920x1080, DX11, all details maxed:

Lots of room for interpretation. You're planning a higher res so maybe this is useful, maybe not.