I have owned both S2 and S3. Currently have and use an S3 with 5cm f2.0, 3.5 f3.5, 10.5 2.5. I have owned several Leica M's (M3, M2, M4, M4-P, M-6) and they are wonderful, but there is something about the Nikon rangefinders that satisfy just as much. Part of it is that they never seem to need servicing! Can't say that about Leica.