I'm pretty happy with my Sena SMH10 and some lower level reusable ear plugs (E.A.R. EZ-INS-with an nrr of 22). Most of the foam ear plugs are in the 29-32 nrr range and make the music hard to hear at higher speeds. Now, the trick is finding the perfect mp3 player with built in BT (not that happy with the Creative Zen M300).