My favorite of all-time is the old Chevrolet Caprice crest that was extensively used until 1991, when it was only found on the center cap of wire wheel covers. I think the emblem initially made its debut in the early to mid 70s. I was also a fan of the old Cadillac logo with the crest and the black ducks, don't like the current one so much. Current manufacturer favorites are the old emblems that have been around a long time; Ford, Chevrolet, GMC, Mercedes-Benz and VW. Simple and bold.