I have 30,000 miles on Sena 20's. They truly change the motorcycling experience for the better, not just rider to pillion communication, but rider to rider as well. The journey becomes a long conversation, safety is improved and pleasure too. The Sena 20 has been a great unit, charge lasts 12 hours plus constantly talking. As to Helmet Speakers, my Shoei Neotec has helmet speaker relief pockets but i have migrated to molded ear buds for noise reduction and audio quality. EarFuze is the brand I chose, easy to make and relatively inexpensive too.