As the oft said saying goes, "Help me uk.rec.audio.car, you're my only
hope!"....

I'm currently looking to install my first (!) new HU in my 1993 black
golf. It's got black trim with green illumination (this will make
sense in a minute!). I am looking to get an MP3 unit (will be through
bog standard speakers to start with) and have narrowed it down to the
following (being on a tight budget - could stretch to £130):

JVC-KDS891R £100
Pioneer DEH-P3500MP £100
Sony CDX-MP40 £120
Kenwood KDCM4524G £130

My main likes would be:

1. Good MP3 playback
2. Proper Random Function for MP3 discs, i.e. whole disc rather than
single folder (as I have heard the Kenwood does)
3. ID3 tag support that will scroll more than once (as I've heard the
Sony and Kenwood do)

Can anyone recommend or provided opinions (or links to reviews - I
haven't been able to find any!) on any of these HU's with those in
mind? I'm currently leaning towards the JVC or Kenwood, the JVC as it
is the cheapest and the Kenwood as it would match the rest of the car
(I said it would make sense!) and apparently has very good MP3
playback...

TIA