been looking on ebay and these three head units as i want something with good sound quality, not so interested these display head units as i think it would look out of place in the mk2 http://cgi.ebay.co.uk/New-Becker-Gr...oryZ3293QQssPageNameZWDVWQQrdZ1QQcmdZViewItem http://cgi.ebay.co.uk/Nakamichi-CD-...oryZ3293QQssPageNameZWDVWQQrdZ1QQcmdZViewItem http://cgi.ebay.co.uk/Pioneer-DEH-P...3QQihZ006QQcategoryZ39762QQrdZ1QQcmdZViewItem
Had a p77mp in my corrado and its a great unit, looks and sounds really classy - I had it connected directly to a set of Vibe components up front (no seperate amp). The Nak will look the most "OEM". The becker would suit a more modern dash, and I once had a Panasonic with blue display illumination and with it being high up in the dash in a Mk2 annoyed the hell out of me. I'd go for the pioneer because I have a lot of mp3 discs, if thats not a consideration then give the Nak a whirl.
The 77MP is a good choice for SQ, as it had more expensive DAC chips than all but the top like 700+ model. Not sure on that particular becker, but I've heard a plain looking becker with black n white LCD display several times and it's a nice sounding unit. The nak is a nak, so I'd be a little weary of reliability. They do seem to have more than their fair share of problems, which is a shame as they're lovely units much like beckers.