I think most will have their own preference. Some like pre war cars that leave me cold. I like the seventies as cars were relatively simple then, no electronics and the design of that era was just great. Various decades did give us some great motor cars and each to their own. That brings the question what, for you, was the highlight, the pinnacle, the one car that stands out? For me the Citroen 2CV. The sheer simplicity of the design, the lightness the way the chassis worked the undestructable 2 cylinder engine, all a masterpiece of design ( in my opinion).