Provided I can get it looked at by a repair person would be a big deciding factor..
repairmen for mechanical cameras are a dying specie..
I don't have a C but two S2 (one 1st version, the other 2nd version aka S2a), bodies are cheap.
The winding gear reputation of the S2 being of brass is a silly online meme certainly originating in pros in the past abusing the mechanism in hectic sessions of fast paced shootings. The main winding gears/teeth of the S2a are just much bigger than the one of the S2 but both are steel.
with a C you won't have light leaks or mating/transmission glitches between back and body...
yes foam replacement under focusing screen and under mirror will have to be done at certain point. Despite the focus on the 2nd body I bought being ok, I replaced the foams anyway. I went my way very easily, posted with details there:
https://www.photo.net/discuss/threa...rror-and-focus-foam-adjustement-pads.5520618/
on the S2a I had to lube a bit/fix the spring of the shutter speeds dial which was very hard, but that was really simple, just remove three screws under the leatherette, I didn't had to get to the mechanism.
lenses availability: easy to get the bigger 40mm, the 50, 75, 100, 105 leaf shutter, 135, 150 and 200. The smaller 40 and the 80 are a rarity. Some Komura and some Görlitz lenses were manufactured for this Bronica mount but are also uncommon.
The focusing unit has a 57mm thread, possible to adapt other lenses.
The Sonnar can be adapted directly on the body's mount, after modification, not trivial but doable, as well as the 300mm Orestegor.
what I like a lot is the 24 frames ie. 220 film possibility, because I make my own 220 rolls from whatever 120 ones (i have a simplistic cardboard guide usable in the dark for stitching two 120 rolls with tape, and correct leader and trail). When I shot a lot it's very convenient, to reload every 23 shots instead of every 12.
Repairmen? well it depends your part of the world. If i had to have a body fixed, locally here in Scandinavia would be very expensive, so I would use a shop in Lodz Poland specialized in old mechanical gear, or couple master technicians in Russia, or this guy in Ukraine who advertises his services with many disassembly insights videos and this one for the Bronica ((haven't use him for repair but once bought one of his detailed commented full disassembly video tutorial, for the Kiev-60, which allowed me to repair one I have)
otherwise I would just send to Japan