+1 I'd have to agree, I have a Blueant headset I use with buddies that I ride with but it also will play stereo music from most any bluetooth device. I've used it with my ipod touch and my iphone and sounds really good. I normally don't listen to music when I'm riding 'cause I just enjoy the sounds of the bike and nature around me - the whole point of riding in my opinion. But sometimes when I'm riding by myself out in the beautiful countryside it's nice to have some road tunes.Just a thought, but Scala bluetooth stereo single user units are down to 100 bucks. Bluetooth IPod stereo, with really good sound quality, no distortion in your Zeppelin at 100 MPH... pretty nice.
Plus you can switch tracks with a button on the side of your helmet. Really.
No install, no hassles... hmmmm.
Now if you want to have a stereo install on your bike for fun, its not a substitute, but I've used helmet based sytems for years and the sound quality is amazing AND it was a lot easier than trying to install a stereo.