I'm going to be offering a class on shooting with large format cameras and for obvious reasons, 4x5 will be the preferred camera size for the class. I'm on the horns of a dilemma - I don't shoot 4x5 any more for myself, mostly working with bigger (sometimes MUCH bigger) cameras (5x7, 5x12, 6.5x8.5, and 14x17). I no longer have a 4x5 camera of either field or monorail variety, and so I'm thinking about getting one I can use for teaching with. I think for instructional purposes, a monorail would make sense especially if I want to demonstrate movements in a tabletop situation. My question is, do I go for something classic, like a Sinar Norma or an F/F2, or do I go with something a bit more high-spec like a Cambo Master or Horseman that has yaw-free axis tilts? What about a Cambo SF45? Anyone ever use one of those? I'm trying to keep this on a budget (under $500) or I'd just resolve my issue and get a Sinar P2. I know what I'd like for personal use, but I want something that will be easy to use for students (mostly adult learners, so nobody will be abusing the camera) and flexible enough to support most student interests. Any feedback is welcome, and cameras not on this list will be received with an open mind.