I have been looking around for a decent A320 for ages. I've downloaded most from flightsim.com and although developers (amateur and professional) claim they fly like the real thing, I don't thnk so!
The last A320 that I found was true to its claim was for FS98 - By Oliver Braun.
http://www.avsim.com/pages/0199/a320ob/a320.htm
Somebody somewhere must be working on this much needed addition to FS2000/2002.