My Takara MP cassettes are doing double duty as MP and IDW G1. I might grab a Hasbro MP Soundwave when he comes out here just so I have a set for the IDW/Classicsverse.
I was on the side of RIRFIB because the G1 toys and comics are that way, making it logical that FIRRIB in cartoon was a error. But now that IDW has made half their comics RIRFIB and half FIRRIB I've given up.