"The moving magnet is probably the way to go."
It is not MM/MI vs MC. It is weight and compliance that are the issues. And yes, some of us are more sensitive to sibilance. I also hear presence peaks(maybe not as much as when younger) that others strain to hear.
BTW, in my thread someone mentioned LP playback more susceptible to sibilance than CD. I have found the opposite to be true. Particularly with low density/bit rate digital such as CD I hear more sibilance than a properly tracking LP system. My V15 Vmxr is not sibilant in a cheapie Project 2.1. This is not limited to music, I am watching twit.tv and since they went to a digital mixer their output is often terribly sibilant.
Y'all be cool,
Robert