Here at Benchmark Reviews we have seen a lot of Cougar products come through as of late. Today we are proud to review something a little different, the Cougar 600K mechanical keyboard featuring Cherry MX Blue switches. There are quite a few things that make this keyboard unique and set it apart from it's previous flagship keyboard, the Cougar 700K. The feature set alone from the 600K create a special synergy for typing purists that not only puts it in a class of its own, but definitely needs further examination.