I have a Pioneer ida-x100 in my car with the Sirius tuner. Its a great unit and I'm certainly glad I went ahead with getting it. I'm wondering about the limits of the Sirius tuner however. The tuner only goes to 184. I'm wondering if I purchased the Best of XM if the tuner would go higher than that? I'm especially interested if the MLB package becomes a part of the Sirius lineup in March or April. Does anyone have this unit and have experience with the higher numbered channels?