I had a 1989 Jaguar XJS V12 with 33,000 miles pass through my hands. It was left to me when my grandfather passed away last year.
It was, in my eye, a very beautiful car. Very comfortable, practical interior with lovely leather and nice wood. Good lines and the motor was a joy to stare at. (Try changing the plugs though!!

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However, my 190E could run laps around it. The Jag may have been just slightly faster than my 2.6L 190, but it certainly handled far, far worse. I was really, really disapointed by the performance of this car. I certainly felt cool driving around in it though.
Heres a pic:
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I sold it for *gasp* $7500. How pathetic is that?
I also agree that there are some mighty fine 80s/early 90s cars running around right now. My choices?
BMW E30 M3, a fantastic looking and performing car. It is my understanding that a good one is hard to find and will still net $8000 +.
MBZ 190E 16V, awesome handeling and looking Benz. Competed heavily with the E30 M3, so it performs similarly. (not quite as quick/nimble/tunable though)
VW GTi, although cheap and plentiful, I think this is still a good choice. I love the boxy look. Very tunable and really easy/cheap to maintain. Handles wonderfully.