I am still looking for that first camera to get me into medium format. I've read lots of reviews and checked out a few cameras such as the Pentax 67 and the Hasselblad 500cm and I've kinda settled on the Mamiya 6. The Pentax was just too big and clumsy and loud. The Hasselblad I used with the waist level view finder and that was very hard to focus and frame and also I didn't like the way you have to hold the camera from underneath. I do like the square format and I want to be able to take this camera around brooklyn and shoot on the street so the Mamiya rangefinder seems perfect. I would like to know what people think of the Mamiya 6 as compared to the Mamiya 7 besides the square versus the 6x7 negative. Also are the 6's hard to find? i haven't seen too many on the web.. any suggestions?