The later EC and EC-TL have MLU. The bodies are cheap enough, that you can pick one up just for that feature, if you need it.

I recently did a little test with my S2A and recorded the sound and looked at the waveform in an audio editing program. There's a lot of movement going on in those old Bronicas because of the falling mirror design that requires an extra shutter curtain to prevent light from entering from the viewfinder and a kind of metal sheath that covers the mirror to prevent light from bouncing off it and striking the film, but only about 1/3 of the vibration occurs before the exposure, and about 2/3 occurs after the exposure.

I think a combination of a Hassy with whatever lenses you can afford and a Bronica for the others is a great mix. The Nikkor 40mm is a real sleeper. It's arguably as better than the comparable Distagon from the same period and only runs about $600, which is way less than anything comparable.

If you want to do the Zone system, the backs are around $80 a piece in working order, so that's the attraction, even if you only shoot one film. I've got five, plus one that I've converted to a groundglass back, which is a little more precise in terms of registration and brighter than the viewfinder, because it cuts out the factors of the mirror and the problem prone groundglass registration (easy to fix yourself, but check the Monaghan page about Bronica focus issues for the whole story).