The final missing part of my new PC will be probably the most important, so I don't want to get it wrong!
I've homed in on a Radeon HD 7950, but don't know which variation to get.
Basically looking at the range here: the ones that stand out (for me) are the Sapphire and the Asus. The Sapphire has very good reviews, especially here and my Case can support the Asus's triple slot requirements.
Budget really isn't a problem (it's already blown!) and will look to get this in the next week or so. I will use for gaming, but with an eye on making the PC something that will last and be decent in a few years - will probably Xfire in a year or so to extend the performance.
For your info, this is the rest of my shopping list:
Case: Thermaltake Level 10 GT Snow
Power Supply: Bought SEASONIC PSU 760W X-760
Primary Hard Drive: 240GB SSD Corsair Force Series GT
Storage HD: Hitachi Deskstar 3TB 7K3000
RAM: G-Skill 16GB (4x4GB) DDR3 1866MHz RipjawsZ X79 Memory Kit CL9 1.5V
Motherboard: Rampage IV Extreme/BATTLEFIELD 3
CPU: Intel Core i7 3930K
CPU heat sink: Noctua NH-D14-2011
(Already have a sound card and going to use old optical media)