My first Mamiya was a 1000 and it worked fine. I was sorry that I didn't have exchangable backs. When I upgraded to the Pro it was because I could change backs. If you give it some thought and don't see it as an advantage then a 1000 would work for you. I had the most recent camera for 12 years now without a problem. I did send it into Mamiya for cleaning at the 10 year mark. Their service was great.