So I just got XM installed by my dealer in my IS250 AWD.
I'm glad to have XM again (had to go a few days without it) and overall it is good, but I'm a bit disappointed with the nav interface.
I can't figure out what the TYPE button is for. It seems to scroll through the various music types (rock, talk, jazz, etc) but when I find one I like I can't seem to switch between stations of this type.
My other complaints are that the text doesn't scroll and sometimes enough information isn't displayed and only 5 pages of favorites? (6 per page). That is no where near enough.
I just had the basic, cheapest XM receiver in my old car and I guess I got used to it.