We've had our Bose Speaker System for over 5 years now. It truly revolutionized the way our family listens to music. Before hearing it, I really thought we would be jeopardizing sound quality, but turns out that is anything but the case. This compact speaker system packs a lot of power. I'm not just talking volume here, but clarity as well. It has a true sound that sounds good whether you're using it for background music or you're blasting it. It changed our home, in that we got rid of our traditional stereo system, i.e., the receiver, disc player, end table-sized speakers and turntable (yes, we still had a turntable). We cleaned house! I honestly can't imagine life without our Bose Speaker System. If you've got an iPod...this is the only way to listen to it! Sound Quality The sound is crystal clear, even at loud levels. Performance We' ve never had a problem with our Bose Speaker System! Battery Life The remote battery seems to last a long time. We've replaced the battery only once and it was both inexpensive and easy to do. Durability I would have given 5 stars to durability, but my only complaint is the design of the power plug. Where the cord enters the unit itself needs to be redesigned. The cord comes out too easily. The connection isn't as secure as it should be, but if it you don't plan on moving the unit around a lot, this isn't really an issue. Ease of Use So portable you can move it where you need it, or wherever the party is! Design The Bose System has a nice simple design. I like that there are no knobs or buttons to fuss with. This also makes it easy to dust.