Don't think this went through last time.
I would have to say
money no object: Ferrari, probably 355, or Testarossa
Under 25k, you can actually get a decent Acura NSX or a Toyota MR2 Turbo.
Maybe a Gen3 RX7 or a Toyota Supra. I used to have a International Scout II
and would love a really nice one of those, or a Land Rover Defender 90 too.
As you might have guessed I love mid-engined cars from the 80's and 90s
1991 Audi 200 Turbo Quattro 20v
1999 Volkswagen Passat V6
1957 Triumph TR3 (in progress)
=== This list supported in part by The Vintage Triumph Register