The pilots speak for the airplane. A lack of training is the result for almost all the accidents (most of which were pilot OPPS). Rumors and more rumors is what gave the MU-2 it's bad rap. Granted, it dosen't fly like a freakin KingAir in which a monkey could fly, but it still's an airplane that requires a bit more attention.
Don't knock it if you haven't driven it. You can't compare the KingAir gallery 200,1900's to the MU-2.