I have an M2, Rollei 35T and 35S, and a CL with the 40/2 Summicron. The CL with the 40 is much more pocketable in my jacket picket than the M2. That I said I much prefer using the M2 as I like its weight and balance better and the overall feeling of the film advance, shutter sound, etc. But if I want a small pocketable camera and decide I need more precise focusing than the Rollei 35 gives me I'll taken CL.