On some other forums, I have seen recommendations of Koh Camera (no, not a misprint of KEH) for Bronica parts.
I have an ETRSi and I have been shooting Delta100 and Delta400 and home developing in TMax developer. I was not satsfied with lab development of black and white, because the only black and white lab in town uses the same process for all films. For C41, the commercial lab is fine though. I like Portra400. Commercial bulk scans are poor. I bought a used flatbed and its fine for med. format.