First, let me tell you I had XM hard-wired into my Pioneer deck for about 4 years. When Howard Stern announced he was switching over to Sirius, I immediately cancelled XM and prepaired for service. With my job, I am walking around for a good 6 hours a day, so I wanted something portable. I saw Sirius came out with a "portable" receiver, the s50. I looked at it, and I learned it didn't have a live feed! It doesn't even come with a docking station. So, basically, it is just a high-priced ($330!!) ipod. I relented and got the sirius one, which is a vehicle-only receiver.