After a gap of about 20 years, my wife suddenly wanted to ride with me again about 4 or 5 years ago. So now most of my riding is two-up, which I really enjoy, and my 1600cc cruiser has no problems with two folks on instead of just one. But what is getting old is my trying to hear something my wife leans forward to tell me, or when I try to turn my head around to say something to her. So since we already have Bell 3/4 helmets made for a specific Sena intercom set, I went ahead and ordered them today. Hope I don't regret giving up the relative silence of my current riding once the sets are installed. I'll post later with my impression of using these intercoms.