My issue is with the Garmin audio quality. The Sena plays music from my iPhone that's equal to the stereo in my living room. The Garmin audio quality is total crap. Wouldn't be a problem, except longer trips (6 hours or more) require the larger song library stored on the Garmin. (660 model) Somebody tell me how I'm doing it wrong, please.
Hud,
I'm still a huge fan of the 20S, but that is one of the cons of this unit. I had a lengthy conversation with a Sena rep at the BMW MOA Nat'l in Billings this past year about that very subject. The 20S only has one A2DP circuit (stereo) and 2 mono circuits, so whichever device you pair to first will be in stereo and any devices you pair to with "2nd pairing" will only be in mono. I had a similar situation where I wanted to pair my phone first for the A2DP stereo since I have 4000 songs on my I-phone but I also pay for a subscription to XM through my Zumo 665, so it was get stereo from one or the other but not both. The rep said, Just pair your phone first & then play your XM through the I-phone XM app, and I said OK that makes sense, but then later realized you have to have unlimited streaming for the XM app, which I don't. So now on long trips I just listen to my I-phone music in stereo with mono Garmin directions and skip using XM. I use the XM while commuting to work (20 miles each way) by using earbuds directly to the Zumo without using my Sena.
Hopefully Sena will step up in the future and create multiple A2DP circuits to alleviate this problem.