Also if you wanted to save some money and know you don't want Crossfire in the future the Asrock Z68 Board is a bargain and you could use the extra money to get a better GFX card:
http://www.overclockers.co.uk/showproduct.php?prodid=MB-052-AK&groupid=701&catid=5&subcat=1990
http://www.overclockers.co.uk/showproduct.php?prodid=MB-052-AK&groupid=701&catid=5&subcat=1990