just to help those curious... THESE THINGS ARE AWESOME! albeit the wife and I have the 20s (non evo units), they are clear, have decent range (usually line of site, not he full stated range but, no communicator does that).
even with ear plugs in, the volume is high enough to hear clearly. we use them on the street bikes, and our trail, dirt bikes. if they could figure out an aux battery system that could stay warm in a jacket pocket, I would use these for snowmobiling too.
another nice feature is for about 70 bux, you can get another complete base, with speakers and mic for another helmet, so you don't have to swap the entire assy to switch helmets.
get with mike, he will take care of you. hear what you have been missing. Ski
May we all, get to have a chance to ride the fast one, walk away wiser when we crash one, keep hopin that the best one is the last one.