I bought this keyboard two weeks ago. Problems with it:
1. The media keys do not work. Only the brightness functions work.
2. Keys have an inconsistent feel to them, and the problem gradually gotten worse. Some of them would not produce an audible click. Some would feel mushy and would not clack when bottoming out.
Overall, I am disappointed that Thermaltake has switch out keys made by Cherry with Kahlil. The keys may still function for another five years, but the quality sure won't last that long.