When compared with the original RK-9000, it is clear that Rosewill has attempted to fix whatever customers have complained about in very loud ways. Missing a PS/2 adaptor? Toss in a whole cable. Want more than one switch to choose from? Here are four! Their design is clearly based predominantly on customer feedback, which is great. In terms of performance, the new generation appears to perform really well but not quite to the caliber of the original. It is possible that they are just in need of getting broken in, but it is also possible that the original is just plain more accurate and more precise. Unfortunately to know for sure I would need to have a new and unused original RK-9000 mechanical keyboard to test against. Either way, it seems good enough to be considered ideal for any reasonable purpose if not just as good.I tend to believe that my needs are best suited by the Cherry MX Blue or the Cherry MX Brown switches. The Cherry MX Blue keys do tend to feel slightly better when I type, however the Cherry MX Brown keys feel slightly less laggy when playing games like Unreal Tournament 3 which require double-tapping a key to perform a dodge maneuver. That said, when ultimately tested, the Cherry MX Blue keys seem better suited than the MX Brown for single-key double tap. Regardless of your typing style, if you want a good and simple keyboard: whichever second generation RK-9000 suits for your usage best is a great choice.