I finally had it with the messed up factory tape deck in the car and ordered the Sony MEX-BT2500 to replace it. In the end, for the money I decided that the built-in Bluetooth connectivity would be more useful than competing units with either HD Radio (which is going nowhere fast and only seems to be available built into a half-dozen head units) or iPod control (which is apparently clunky on most units, and which probably isn’t any safer to use while driving than just fiddling with the click-wheel), and there wasn’t any point to migrating to an integrated XM or Sirius receiver from my still-serviceable SkyFi2. I may, however, pick up one of these dealios to get my iPod to integrate wirelessly with the Bluetooth stuff in the receiver. Allegedly even a technical incompetent like me can install it myself; I guess if I can build PCs from components putting a radio in a car shouldn’t be too hard.
Now watch my car completely self-destruct the day after I install it.