I primarily use this system for local testing of any programming projects I do, however due to the amount of harddrives inside, I also use it as a media server for storing films and tv shows. Although initially I did have an issue with the motherboard I had originally purchased (Gigabyte GA-Z97M-DS3H), and also the graphics card I was planning to use did not work, the build runs rather smoothly now. After the first few issues with the build, it has given me a wonderfully stable system to develop on. It has no trouble running 24/7 as my media server either, even when it is running Mac OS :3
I installed various different operating systems on the drives; 320GB - Ubuntu 250GB - Drive used by ESXi 6.0, booting off a USB stick 500GB - Mac OS
The other 2x 500GB drives run in RAID 0 for storing media on.
The only issue I have come into since finishing the build is the CPU usage when running Plex, which rockets up to around 600% on over all 8 cores, however I believe this to be an issue with Plex, not an issue with my build.
I should also note I didn't go with the Arctic White case mentioned in the list. I actually went for the 'Yin' version, from Overclockers.
EDIT: Upgraded RAM from 2x 4GB (1600MHz) to 2x4GB (1600MHz) with 2x4GB (1866MHz, it was cheaper than 1600MHz).
EDIT 2: Upgraded RAM from to above mentioned to 4x8GB (1866MHz)