From my understanding, talking with J&M rep, the Sena will work with the J&M dongle, but will only be in mono, not stereo. If you want stereo, then you would have to do all J&M Bluetooth. The rep also said that their Bluetooth headset would work with other Sena headsets, but would not be always a reliable connection. So, if you have friends that have Sena headsets, you may or may not be able to communicate. Prior to getting my Goldwing, I had a Sena 10C headset. The guys I ride with all have Sena so we all could communicate with each other. I kept my Sena 10C and got the Freewire. I was initially disappointed to the quality of the audio (sound volume) coming through. I would also sometimes have mono and sometimes stereo. I recently did factory resets on both units and then repaired them. Now, the sound is always stereo and the volume quality is much better. Not perfect, but better. I don't have a CB so I don't know how that would work quality wise. I did listen to the J&M system at a demo set up at a motorcycle show. The audio was very good, but there was no way to know how it would sound at highway speeds. I love my Sena and haven't had any real issues with them. I also think the J&M set up is nice. If you ride solo or with a passenger then I would honestly go with the J&M set up. Since I already have an investment with Sena, I believe the best option for me is to stay with Sena. That and the fact that my riding buddies all have Sena. If anyone has had the experience with J&M Bluetooth mixing in with a group of Sena Bluetooth headsets I would love to hear your experiences as far as communicating with them.
So, bryanw1, in my opinion, it's a matter of who you ride with and what they have that determines which company to go with. I honestly believe both are good companies. It's a shame they can't work together to make their products more compatible with each other. I believe they would both benefit more if they did.
PS, I'm about to try the Sena 20S. I've been told that platform is very good as well. I'll try to update later when I get a chance.
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