I'm using for the ADX controller and didn't want to try to transplant the PCB from it and optical sensor into the YubiParts buttons so I only used the top button part itself as replacement and it's a big improvement over the stock buttons. I'm sure these would work great on a real maimai cab, but would be nice if a version was offered that came with the ADX PCB and optical sensor and all wiring installed.
Currently using these buttons/parts on a maimai DX cab. They are working great so far and I have had no complaints from the many 16k rating players who abuse these buttons daily. Big thanks to YubiParts