Hello, I have owned two of these for about a month. Mine seems to be fine, but my wife's seems to be losing a charge after about four hours (they are supposed to go ten hours). I called the dealer, and they are getting me a replacement with no questions asked.
The helmet is very comfortable, and the built-in fighter pilot sun shield is awesome. The blue-tooth function works well also. I have it paired with my Blackberry, and helmet to helmet is fine as well. I would say that we can talk up to about twenty feet apart, an it gets pretty crackly after that. We seem to have developed a dependence on the communication abilities, and it is really a drag to go without it in unfamiliar places.