There were a lot of good deals and I wanted to go with a purple colored build with flexibility in the future for different colors (the TB Vegas Duo is Red or Blue or Purple). In addition, I didn't want to sacrifice performance for the fans, therefore these fans are high quality and should be fairly quiet.
In addition, my goal was to make sure that everything was compatible and to avoid any bottlenecks.
I previously had a Sapphire Radeon HD 7970 in here, but I got tired of dealing with ATI drivers, so I buckled and bought the EVGA GeForce GTX 780 Dual FTW ACX - and I have no been disappointed. I really need atleast 3GB of video memory because of the triple monitor action. In hindsight, I should have spent more money on the main monitor and bought some 21:9 ratio side panels, but the deals I got during Black Friday were pretty good.