I tried the Nady products a few years ago and was very disappointed in them.
But, in all honesty, it was, a"a few years ago".
Maybe they have made some improvements in thier products.
I had the driver to passenger setup and it was, to be frank, not worth the money I spent on it. One would think that being not more than a foot apart at best, you could hear each other through the headsets. We rode a full dress yamaha Venture at the time and the wind noise was marginal, but he sound transmission sucked.
I have moved on to a GMRS radio when I travel with other bikes, with wired helmet mounted speakers and a microphone. I also am a ham operator and carry a handheld transmitter whch is wired to the helmet with seperate speakers and a micphrone.
So, in essence, I have two radios, and two sets of speakers and mics on board.