Hey
I have a Nakamichi 45z deck in my car. I love it. I have it hooked up to some MB Quarts and the quality is amazing. I am not even running an amp yet and it sounds pretty damn good. I definately recommend Nakamichi over Alpine. I have an Alpine in my parents 190 and the quality is just not the same. It is hooked up to some Boston Acoustics Pro Series component system, Rockford Fosgate amp, and it sounds nice. The thing that annoys me the most is the lcd screen is unreadable in sunlight. I would suggest buying from
http://www.smilephotovideo.com/ I have bought a blaupunkt cd deck from them, which is a company I would never buy from again after(poor quality) and also my Nakamichi and I got a deal and a half. The deck retails for $450 and I got it for $300. Hope that helps.
Giancarlo