I highly recommend a tlr for street photography. Do get one with a split finder. I shoot with a rolleicord and love it. Changing film is a huge downside. Takes forever. It is also another viewpoint, which i like but you may not. I think the view point is more intimate. That could just be me though. I do not recommend the Mamiya c3. I have one and it does not work for me street photo wise. I think rollei takes the cake.