Wasn't sure if this should go in the newbie section or not. Can't search archives with the term "II and III". The $1,000 difference between the II and III is just the radio with bluetooth? Anything else? I don't use bluetooth and I mainly listen to talk radio on satellite. Do the II's radios have XM where all I need to do is call and subscribe? The brochure reads "satellite radio capability" and for the JBL radio it reads "integrated satellite radio capability". So wanted to ask for some clarification. Thanks!