I have serious and I love it. Had it for about 7-8 months now. There are absolutely no commercials on the music channels of SIRIUS. You are going to get commercials on the talk streams, as they are basically just audio feeds of the channels they come from. I think SIRIUS has a good selection of stations. I never listen to my cd player anymore and I have a 6 disc in dash changer. If you have a Kenwood headunit you should go with SIRIUS. SIRIUS allows you to pay monthly, quarterly, bi-yearly, annually, etc. Also if you go with SIRIUS for your car, you may as well get the Kenwood Here2There since you can get the second subscription cheaper.