I have been lucky enough to drive and own a lot of seventies cars, Bentley T1, Pontiac Firebird, Lamborghini Espada, Lotus Europa. Some Italians, Alfa, Fiat, Lancia. Jag V12 XJS, and saloon. MG's Healey, Jenson. I knew people in the business so got to buy cheap and drive lots of stuff that otherwise I couldn't have done.
I think the cars I most miss though are my MK1 VW Cabby and 1972 Fiat 124 Sport. Both were so much fun to own and drive. If I had to have just one though it would have to be the Bentley, just because it was so nice.