I haven't as yet seen the Pioneer MP3 deck, but I do own the JVC KD-SH99...
It is a great deck. My only 2 gripes are that the antenna stays up when playing the CD/MP3 files. I circumvented this by installing a switch for the power antenna.
Second, you can only switch from folder to folder (mp3 files) from the remote. Hard to do while driving.
Sound quality is excellent, it has enough clean power even at higher volume settings. The display shows cd text and mp3 id3 tag displays, or the first few characters of the file name for non-id3 mp3 files.
If you have a burner in you computer, and the time to convert your favourite albums to mp3, it makes life more convenient. I just got a portable mp3/cd unit, and I can use the discs in either.
Good luck on your search.
Brian
