I have the Coolermaster HAFx. Been using it since 2011 (blue led version). Has housed a few different builds. I am looking for something new and have sort of narrowed it down to: Coolermaster H500M, Corsair 500D rgb, or the Corsair 680x. Each one of the above has advantages and disadvantages to such an extent, I can't really decide. Any help/advice from owners is appreciated. I am currently air cooling an overclocked 6700k. The next build will be whatever top end consumer cpu is available and will be AIO cooled. I really like the look of the Corsair 1000D, but it is just too darn large. Thoughts?