I had few weeks a Pentax 67 with 105mm f/2.4 lens from a friend. and these are some opinions about this experience. The overall handling is good, except loading and un-loading film which I find kinda tricky. The camera feels good in hands and somehow I think is more stable than my Hasselblad. And I like this rectangle format pretty much. I will re-use for a while my Hasselblad to see if I am still thinking to rectangle format and if yes I think I will go for a Pentax 67.