Neither.
If you want a custom gaming rig, then build it.
Except for the cheap cases, off-the-wall PSU, and so-so motherboards, you have a good parts list.
Buy a solic case with good airflow. Looks are important, but function is more so.
Don't skimp on the PSU. Go with a solid name (Antec, SeaSonic, Fortron) and more wattage than you actually need (call it overhead).
The new NVIDIA 680 boards are starting to come out, and they leave all the Intel boards in the dust.
Oh, and don't go wireless if you plan to game. Take the money and buy a longer CAT-6 cable.