I'm curious to hear why people did and didn't get the XM add-on. I personally don't plan on listening to XM. I'll just be happy I can finally hook my iPod into an aux jack instead of using my iTrip, but it seems like the majority are being ordered with XM, and I just want to make sure I'm not missing something obvious. I know it's probably better integrated than an aftermarket would be, so did anyone get it for the just in case scenario or do you plan on keeping an XM subscription? Did anyone not get it just because of the look of the antenna on the trunk?