If Bronica is your choice I'd recommend the model 'C' the S2 (1965) and the S2A (1969) both had problems with the gears meshing, or striping, between the body and the film magazine. I had one S2A that went thru 3 film backs and the backs are not worth fixing.
The C (1964) & C2 (1965) don't have this problem because the body/film magazine is one solid piece.
I do regret that I sold my C it was solid as a rock, other than a CLA which included an adjustment of the ground glass, I had no problems.

Good luck!