Which one are you going with? The packtalk bold and slim look interesting but i have not read much about it in the field yet.
FWIW i dumped Cardo a few years ago in favor of Sena. We had a lot of issues with our G9x units when used as a bike to bike or rider to passenger intercom. The stuff we experienced was a very common complaint with those units. It was a real drag to have to stop multiple times during a ride to fix the comms so you could talk to your passenger again. It was bad enough to sour me on the brand because their support was beyond useless. WE have had much better service form the sena's 20s units we have now.