Been using this machine for 3 years or so for 3D rendering, vfx compositing, and casual gaming. It's been a champ and hasn't had any issues. It's been awesome. However, as new 3D projects are approaching, I'm starting to build a 2nd workstation for bigger and better stuff.
One thing I do regret is not buying an aftermarket cooler, it still has the stock intel cooler on it. I'll make sure I don't make that mistake on the next one. Another change I want to make for my next workstation, is to try and use only SSD drives, no mechanical ones. With the new 1TB EVO drives, I think it's entirely possible and very worth it.