Yashica mat 124G. This was a deliberate move into a larger format from 35mm. I still have fond memories of it, but not so fond memories of ages spent trying to get 120 film fed into spools!
The first film I used was for colour "snaps" and the apparent sharpness and lack of grain blew me away and sold me on MF.
In fact, at my wedding it absolutely pee'd down and the photographers 2 mamiya's became waterlogged, so I loaned her the Yashica. Kinda ironic having photo's taken with my own camera in the wedding album.