The Monorail cameras are the most versatile, and affordable options available.
I love the OmegaView 45 Cameras, I bought a 45F for $105.00, and a 45D for $60.00 ! Transporting the monorail camera can be a bit of a hassle due to the size, and weight. Lenses are a personal choice based on your preferred subject matter, or what might be affordable at the moment. Remember to get a copy of, Using The View Camera, by Steve Simmons.
Enjoy The Weekend !