They sound great, but the compactness has a reduced battery life. My wife and I have the SMH10's. I can intercom her up to a quarter mile unobstructed in real life. When we do Adventure Tours, we run them solid for 10 hours with constant bluetooth music to our custom earbuds, talk some on intercom, and use our phones if out of range. The SMH10 offers an optional helmet adapter that will take a mini plug for headphones. I did not see the option yet for the new unit.
After a near death experience in Morocco by a series of crazy road events, in which I had no way of warning my wife, I will not ride with her in tow without one. I saved her from a huge hole on a sweeping turn when we were cranking it on that had me airborne, feet off the pegs.