the other kbdfans d-series boards weren't really well received because the gasket implementation has been pretty scuffed (this is sort of true of all of the kbd boards that have used gasket mount). the 75v3.1 uses a pretty standard top mount, which is pretty hard to **** up. mounting and aesthetics are probably the biggest two factors to weigh. i'd probably go for the 75v3.1; looks nice, sounds nice, and is a little less expensive
