I was a big Alpine fan until I couldn't get an Alpine MP3 player. I just bought the Kenwood 919, and I LOVE it. It can be improved (add rewind and fast forward in songs, quicker file searching, better interface, etc.), but the 919 is a GREAT CD player with tons of bells and whistles that happens to play MP3's. Most of the negatives of the 919 can be overcome by carefully planning MP3 disc creation. I got a one time deal of $456 after tax from an authorized excelon dealer, but I have been offered one for $400 from a non-authorized dealer. Also, I did some product testing for another authorized dealer who offered it to me at around $500. It can be purchased for these type prices if you can get a "friend" in the business. The unit is well worth the price so far. No skipping, beautiful sound, lots of features, easy installation, and ability to add a changer and a TV monitor. If you have the cash and want the BEST in dash player, get the Kenwood. If not, get the CHEAPER aiwa, and wish you got the Kenwood.
PS...Don't bother asking for details on the deals, I can't get them for others. I just wanted to save people the heart break of getting the inferior aiwa at what wouldn't be a hot deal.