The problem is I have not driven many of these and I am therefore responding to design and reputation more than anything else. Without looking at anyone else’s responses, here are my choices:
Morris Mini (the original Issigonis design) and specifically the Cooper S.
McLaren F1
Ferrari Dino
Ferrari 250 GT California
Lamborghini Murcielago
Aston Martin DB5
BMW M3
Citroen DS
Lotus Elan
Porsche 911 RS
Karman Ghia (convertible)
Sunbeam Tiger
Daimler Dart