I'm late to the party, but I like the Sena SMH10's as well. I've had a pair for several years for music, phone, and passenger communications. Also, sometimes loan one to a friend for bike-to-bike comms within about a half mile. Only problems I have are not related to the Sena's, but to Bluetooth. Sometimes they won't pair and have to be powered off/on/rebooted/etc, then they suddenly decide to pair. Have same problems occasionally with Bluetooth in my car, so I know its a Bluetooth "thing". Also, if you have multiple devices competing for a pairing - like a phone, headset, and GPS, sometimes unpredictable things happen if they pair in the wrong order and you have to power them all off and start over. For example, if I have my Sena on and paired with my phone and playing Pandora music thru the iPhone app, then turn on my Bluetooth-enabled GPS (which also has a Pandora app), it snatches the connection away. If I power the Sena off and back on, it re-syncs everything and I'm back to normal. I'm hoping they will eventually get the bugs worked out of the protocol!
1999 CB-750 Nighthawk
1988 GL-1500 (gone but not forgotten)
K 4 D I T