I recent bought the Asus 6850 from eBuyer. Seemed to be the best compromise in terms of cooling, noise and power draw. Very pleased with it indeed, flawless performance, not a single game crash, BSOD or glitch in-game running it under Windows 7 Pro 64-bit. And this is on a PCI-E 1.0 mobo (with a beta bios update to run PCI-E 2.1 cards).
I think the XFX card is good for cooling but very noisy.