the 35mm Roundshot is a great little camera, very sharp and easy to use. I don't have one but have seen the results. I have a couple of 120 cameras and I think they're really great machines, the only thing against them is their physical size. It's never worried me, if you're used to large format it's no problem.
I used to print the negs on a stretched enlarger I made that would handle a 14 inch neg. These days I scan and print. You could do the same with a 5 inch camera.