I actually find the voice quality of the Sena speakers to be much better than the JBL. I think they are maybe better optimized for voice, while the JBL is better optimized for music. A bit like the difference between race monitors that are better optimized for voice vs music monitors. Bass is certainly better with the JBL, the Sena reminds me a bit of an old joke regarding Bose. "No Highs, No Lows, it must be Bose." Sena is definitely more flat than JBL, but I feel they work well for voice comms. I highly suspect it is my wife's unit that is faulty. We have been through updates, resets, settings, etc. with Cardo. When none of that worked, they just ghosted us and stopped replying. They couldn't figure it out, so they didn't want to deal with it. But they would never send an RMA to take hers back to check it out or exchange it. The reason I suspect hers is that she can hear me far better than I can hear her. We have already tried different speakers and different mics, but no luck. The settings are the same, so I believe that pretty much leaves the unit. I am certainly not dumping money into a 3rd Cardo PTB to test my theory. As bad as I thought Sena's customer service was at times, Cardo seems to be trying their best to outdo them for poor service. I never had any problems with Sena in getting them to exchange a faulty unit, even one that was actually out of warranty. I contacted them just for possible repair assistance, but they just went ahead and exchanged it anyway. Like a year out of warranty too. :) Sena's biggest problem is they are slooooow in responding to warranty requests/issues. They aren't the only ones in the industry really bad about replying. Cardo is just as bad and I am finding out so is Mosko :) My only problem with the Sena units really was the waterproof issue and that they would sometimes cut out when wet and wouldn't work again until they dried out. A pain for sure, especially mid-trip. That said if Sena would come out with a fully WP unit I would dump these Cardo's in a New York minute :) Edit: I still may give the Sena 50R a try. It seemed to me that by far the most vulnerable area of the SMH-10/20S/20S Evo for water ingress was the job dial. The pushbuttons on the 50R may prove a better option. The Sena HD speakers I like.