For you guys that have used these units, the regular SMH10 is too bulky for my use but the SMH5 and the SMH10R will do the job. My concern is with the multipoint pairing; I've read that the SMH5 doesn't support this in an older post here but Sena's website shows that it does, probably they've upgraded the SMH5 to do this. I know the SMH10R has multipoint pairing but do you have to press any buttons to switch between paired units for either device or does it happen automatically? Reason I ask is I want to pair either a Midland 445 BT or the Motorola MU350R two-way FRS/GMRS radio with the unit and use my iphone for music and press the Push to Talk button on the two way radio to communicate with other bikes. The Midland 445 BT and the Motorola MU350R are both bluetooth radios and I've already gotten confirmation from Sena that they will pair with their devices. This will allow communication of up to 35 miles between bikes!. Maybe I should be asking this in another forum but I ran across this post doing a search and it seams a lot of the users are here. Thanks!