I think anything old depending of what your flavour is.
I’ve sold a few recently inc my much loved Ford GT. Epic car but couldn’t relax when there are speed bumps everywhere and people seem to be dribbling around far more lately at well under the already ridiculous speed limits.
But my cars that give me the most joy are the S1 Etype DHC, the 66 Sting Ray 427 which and to a lesser degree my TR6, my modern stuff seems to be parked up in my unit all year round now.
Both my Etype and Sting Ray are fast cars even by todays std and I do drive both far too Fast really, but equally I’m happy plopping around slowly.
With old cars there’s much more to a drive, more involving, more stuff going on. It’s just a shame our weather doesn’t allow me to drive them all year round. It’s why I start losing the plot through winter.