S4/S6 vs 200TQ 20 valve

[William Murin <murinw@cs.uwp.edu>]

Any thoughts out there on which S4/S6 model years are more desirable then 
others?

"desirable"--is open to interpretation so I would include reliability and 
resale.  For example, is a '92 S4 a more desirable car simply because it 
is the first of the breed or are '93s and '94s better because they have 
been debugged somewhat?

Also, does anyone choose to compare '91 200TQ 20 valves with S4s.  Are 
they essentially the same except for some sheetmetal or are there more 
differences than just appearance.

Thanks

Bill Murin
'84 4kcsq with 155,000 miles (and beginning to act like it)