So I'm looking for a new video card, which is a better upgrade from a gtx 275?
They're virtually the same price.
It's between a XFX 5850 Black Edition, and a reference 6870.
HIS or Sapphire.
A priority is cooling. Does the black edition do a better job with cooling?
End of November is when the HD6950/70 are supposedly due.
If you don't want to wait I would just go for the DirectCU HD6850 and give it an overclock. It has the best cooling around and should get up to 1ghz. The HD5850 or HD6870 are slightly better but nothing near worth the extra $60+ imo.