If you get the deathadder, make sure you get your free mouse mat too
http://www.overclockers.co.uk/showproduct.php?prodid=BU-001-RA&groupid=702&catid=23&subcat=1257
http://www.overclockers.co.uk/showproduct.php?prodid=BU-001-RA&groupid=702&catid=23&subcat=1257