my personal preference is the hd 7950 or if it fits in budget 7970. but the 760 or 770 are great cards. in my opinion its really preference with those cards
The 7970 is a fraction above my £195 budget
But, iv'e heard that a 7950 OC'ed is nearly as fast as a 7970.
Also, would my FSP Bluestorm II 530W be able to handle a OC'ed 7950?