Well, I finally got the Pioneer Avic-F90BT installed. It's really a great unit. I've heard there are some bugs, but it's lightyears ahead of the Radio 10. I suppose I'll have to work on speakers and amps next, but for now it sounds fine. Some things I noticed:
1. The tweeters up on the dash must have their own high pass filters, as they sound really tinny no mater the eq. The eq controls work mainly on the door speakers. Can anyone confirm, please?
2. I got the XM radio add-on and it's working. There are only 6 presets, which is skimpy, but adequate I guess once I get the feel for navigating the stations.
3. There's a stupid warning screen when you switch to a dvd. Any way to get rid of this?
4. Doesn't read a 4GB SDHC disk. Oh well, will have to get a smaller one.
All in all, a pleasant experience.