I’ve had XM since 2003, but I did have Sirius for awhile. I found Sirius so much better in sound and the interface was better too at the time. Since XM and are Sirius are under one umbrella I was wondering why Acura still goes with XM and not the superior Sirius, even though both are too compressed for truly great sound in the RDX. What do you other members think?

Sorry about that. I contacted SiriusXM directly, and yes they do offer three different compression platforms—Sirius, XM, and Sirius XM. Depending on your vehicle, you will have one of the three services if you have a receiver in your vehicle. In my initial post I was just asking why Acura does not have Sirius as I think it sounds better than XM or SiriusXM. Oh, and Bruce, with a thick accent, tried to sell me a Lynx radio with a great offer, but it was for a limited time only. Oy vey!