I used Konica Omega 100 and 200s in the Air Force, currently have 3 Mamiya Universals and a Press with 4 lens kit. The Konica is quick, the shutter is cocked when the ratchet film advance is pulled. My NOIC use to use the one handed advance with put a lot of stress on the mechanics. There 4 lens (?) Air Force units came as kit with a wide, the 90 normal and 180, all sharp, Konica made some very good glass. The Mamiya is slower need to cock the shutter, had 6X7 and 6X9 backs as well a multiback with masks, 6X4.5 6X6 and 6X9. Lens range from a 55 to 250, which as I understand it came in 2 variations, without and with coupling to the rangefinder. The early models also have a glass back and 6X9 sheet holders. There is a Polaroid branded camera with a separate set of lens. I have 6X9, 6X7 backs, dont use ghe 6x7 back much, and a glass back for the press with I use when hiking.
The only real issue for the Konica is that many of the units were heavily used by wedding and events photographers and the ratchet advance might be well worn, have no idea who can fix it.