I'm glad that the Sena SMH10 was my first purchase of a helmet comms system. THe clarity from rider to rider is very good, and I have only used it once for a phone conversation while riding and it worked flawlessly. I don't often listen to music while riding but when I have the music is also nice and clear.
Yeah, I also have problems with the large ear speakers fitting well and not pushing against my ears. My best option would be to change to the mount that allows me to connect earmold earphones, and that's what I'll do when I can arrange it.