http://overclockers.co.uk/showproduct.php?prodid=GX-174-OKuk ;)
also, best computing website here scan.co.uk
i may go with it, BF3 performance is a bit better, gonna research crossfire performance when i need to upgrade also.
The scaling is great with those cards, around 99% or so.
If you want to splurge on a slightly better cooler, http://overclockers.co.uk/showproduct.php?prodid=GX-115-MS&tool=3
Also for anyone in the US (or willing to ship from US) tigerdirect is selling the 6870 for ~$155.
Link Here