I have the KAT Eternal set, but I don't really care at this point as long as it is the right profile for the spacebar being convex and nothing is wrong with it. However, to me the one key is not worth the money and extra hassle of purchasing an entire set at the moment. Now if it was a smaller set for a planck and cheaper then I would look at picking it up, but they only seem to offer a set for normal layouts.