This system has served me well over the past few years! Sadly the only thing I want to upgrade right is so ridiculously price right now I guess I'll just wait on new video cards!
This is my main PC (OS X) and gaming rig (Win 7). The only hardware issue I had with the build was the fans on the H-80i are complete ****. I replaced because of the noise they generated. The radiator is configured for push pull, and is venting out the rear of the case. The rest of the fans are on the PWM, the front 200mm is intake, and the top 140's are exhaust. I removed the 3.5" drive bays from the case for better air flow in. I also removed the Plextor SSD from the PCIe board and installed it in the 10G M2 slot. There's no difference in performance but it does free up the PCIe slot for something else in the future. I opted to use the Gigabyte 3-Way SLI bridge just because it looks cleaner then the ribbon needed for 2-Way. If the cable Nazi's have complaints now there's nothing I can do for em, this is as clean as it gets for me. The Auria monitors are IPS, 1440p, with a 6.5ms response time, for the price they can not be beat! The Alesis studio monitors (speakers) are pretty sharp and surprisingly neutral for the price point, they do require a sub, and can be easily over driven.
Update: Looks like the Gigabyte X99-UD4 can not handle 2800MHz RAM. After having RMA'd my RAM, and updating to the latest F9 BIOS version, I still can not boot using the XMP Profile 1 of 2800MHz!
Fire Strike: http://www.3dmark.com/fs/2748593