Personally I am happy with the 00 C/M. Have been for years. I'm on my 2nd one and the first is still going strong. You'll love it once you get used to the thing. Be sure the back and the film insert are the same serial number. Also make sure your lens is cocked before changing lenses and you'll be OK. A prism viewfinder is a big help as well as a rapid advance crank. I see them all on eBay all the time.

Enjoy!

Bill