I had a contax 645 a rollie 6000 system and a mamiya 645 afd. Quitre frankly I never liked the feel of the mamiya is the 645 md 111 have a better feel. Or is it just a reved up 645. I loved both my contax and rollie systems only went to the contax when I started shooting nature. I am contemplating getting abck into meduim format so whose who have shot with the contax and mamiya what do you think.