Can't see the website links, says its blocked.
Anyway, I'd suggest getting a 7770 from Sapphire, or a 7790, but I'd say go with the Radeon 7770. Better price for preformance.
If you have the 8 Dollars extra, just pick up the GHz edition.
A few burgers or a Large Pizza vs 2 years of a slightly better GPU (shrug)