If you look at the releases of both Canon and Nikon, Canon matched Nikon's releases body for body including the interchangeable viewfinder pro body types.
Originally Posted by Andrey
- 1959 Canonflex <-> Nikon F
- 1971 Canon F-1 <-> Nikon F2
- 1980-81 Canon New F-1 <-> Nikon F3
This is a convenient link that shows the timeline for both, as well as Minolta and Pentax -> http://minolta.eazypix.de/slrtable/
After checking and reading I found out that a 35mm body and at least one or two prime would cost me as much as a Mamiya 645.
However the quality and the size in bigger, the price is almost the same.
Do you think worth to jump right to Medium format or work a little bit more on 35mm?