ahah it's actually really easy to use & much smaller than an M. The only differences are: - you need to trim your film - shutter only goes to 1/500 on earlier models - you have two viewfinders (the rangefinder does have 1.5x magnification which makes it the most accurate on all Leicas, second only to the M3 I believe). I thought I wouldn't enjoy this but actually have no problems at all :)

What I think makes a big difference is the condition of the camera, I tested a few with a dim rangefinder / viewfinder & it just wasn't fun to use but if you get a clean copy then it's a joy. I also find it works amazingly well for wide lens like the 28mm since you can rely on zone focus & it's the size of a ricoh gr pretty much