I’ve been lucky enough over the years to get to use a few onboard communication systems while driving and riding in a UTV. The ones I used were mostly the type where there is a central unit and you plug into it with a cord running from your helmet. These were nice units, but were basically limited to communications between the passengers and between machines. Using one on an ATV would be difficult with standing and sitting. I think the cable might be an issue. Recently I got my hands on the Cardo PackTalk Bold, and it has completely changed the way I view communications while out on the trail.