I've used several Canon, Zeiss ZE, and Zeiss ZF.2s but my favorites are CP.2s. Lightweight, long focus throw, and very sharp. They're all very close to same weight/size too (except 100mm and 135mm).
Red Pro 17-50mm zoom, some Zeiss Ultra Primes, Arri Superspeeds, and Cooke S4s. I say some, because in each set there are lenses that are either too heavy or big. Usually these are at either end of the focal length - either very wide or very long focal lengths. Oh, and most of these included a Matte box Arri LMB3,5, and 15. Yes, it hurt.