I smoked for 20 years ('75 - '95) and Camels were always my favorite, although I normally bought a less expensive brand by the carton. If I had occasion to purchase a single pack I always got Camels (in later years, the Camel Lites). I had no idea they were Bix's favorite.
The Beatles were supposedly fond of Larks, but when you see photos or film where the brand is visible you usually see them with Marlboros.