Would have to say for me personally would be a clean white W123 sedan
Simple, stately, elegant, unpretentious, having all those hidden virtues of safety, durability, timeless classic good looks, class, all controls logically placed, easy to repair, spares always available, the model seen everywhere all over the world, ageless....
If it was a woman, it would be Jackie Kennedy, in a white sleeveless sheath by Oleg Cassini, about 1962 when she was at the top of her game

mmmmmm
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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...
1995 E 420, 170k "The Red Plum" (sold)
2015 BMW 535i xdrive awd
Stage 1 DINAN, 6k, <----364 hp
1967 Mercury Cougar, 49k
2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive

(sold)