I have the Sena SMH-5FM with the upgraded speakers in my Shoei Neotech. I bought it primarily for bike to bike comms, but have come to enjoy using it for wireless music. I link it via Bluetooth to my iPhone 5 and tell Siri to start and stop the music as required. The Sena jog dial allows me to easily control volume and select songs. I never thought I'd like riding with music, but I have come around to it. I think I like the speakers because they do not completely drown out all road/engine noise...I still feel like I can hear things around me. I also like that I can take/make phone calls, and with my Escort and GPS wired to the SM10, I can get radar warnings and voice directions as well. Pretty slick.
'07 R1200RT, '06 VFR800A, '08 SV650SFA, '05 CRF250X
-- Golf is for the dead.