I have two sets of airbus and all though my ownership of the + they could come disconeted after a pause in use or I could not get music to start playing after a pause or it would show both pair connected and other glitches. that has all gone away with the max. one problem I still have is sometimes people can hardly hear me with the airbus. I would take them out and go to speaker phone but then they would connect again. I had to put them in the case to stop them from connecting. that's gone too.