Evening everyone, I'm giving serious thought to a lightweight medium format system. I have and RB67 Pro S and a few lenses and I love it. Problem is that it is a big heavy camera and while I shoot it handheld pretty much always I may need something not so heavy in the near future. My wife and I are likely to start spending a lot of time traveling soon and I'd like to get something that is a bit smaller and lighter that I can carry a modest distance on foot. I thought about a Hasselblad but wonder about reliability and repair availability. I bought a couple once and found them to be pretty well worn out but I like the smaller size and weight compared to the RB. I am also thinking about a 645 format. I'm not sure that Mamiya is still supporting their 645 system but really would like a Bronica ETR. Is there anyone servicing this system? From what little I have seen the lenses are outstanding and a decent sized kit would not be all that heavy. Other suggestions? Thanks. Rick H.