I've been using this FM transmitter for my new 80GB zune, and so far it has been great. It has a pretty powerful signal, so it wasn't very difficult to find channels to use. There hasn't been any static, even when the transmitter is sitting on my passenger seat, and the sound quality is very good. The transmitter does not have a charger, so if you want to charge your Zune or iPod or other mp3 player, you'll need to either by the more expensive transmitter with the charger, or a splitter and a separate charger. The only qualm I have with it is the buttons for the three saved channels are a little sensitive, so sometimes if I accidentally bump it or if stuff starts to move around next to it, it will switch channels. But it has worked great so far. A good investment.