Shot hundreds of rolls on P67, some 95% handhold as well and running ultra-high resolving drum scanner to prove the mirror-slap isn't an issue down to 1/30s when using wide-angle (45mm) skillfully. If you hunt for decent sharpness then with normal (90/105mm) lens 1/60th is the bottom limit and 1/125th is already tack-sharp with steady hands.
The 105mm f2.4 is magic as already said before, but also ability to run unique effect lenses such as 35mm f4.5 fisheye, 120mm soft focus or 400mm f4 bokeh monster without braking your bank.
A single used & abused Pentax 67 is my main workhorse, over 200 000 kilometers on various motorcycle trips, around half of this in offroad (many crashes and falls included) photographed in over 80 countries. Worked flawlessly from 5000+ meters above sealevel (at temperatures -35C) to +45C in Saharan desert with sand blowing beteen lens and it makes grinding noise, pr tropical 100% humidity with water drops forming inside the camera (and killed some of my frames with waterdrops 😛). Mine looks like a piece of crap - lots of paint lost, some rusty parts, some bits are falling off, some screws are missing, BUT mine still fires to 100% of its capability! Couldn't ask for a better camera! Probably have to take it into my own grave since it's without a doubt the best camera I've ever had 😀
That being said I'd get Bronica just because I don't have it (probably never buy it too, but always nice to have more variety in the world!) 😉