I'd prefer a 'digital back' that can be attached to a film SLR, something that acts like film, let me do the exposure thank you. That way you could use smething like a $200 mint F3 like one of my brothers just bought. Instead they make plastic cameras with arrays of buttons and layers of menus, cameras that don't seem as durable, and ones where the low end models cost over 2x what I paid for either FM2.
I'm looking at some sort of digital Nikon as I have a set of manual lenses, but haven't seen anything that I'd want to buy yet. I may need to soon, as it seems like Kodachrome is down to one processing facility. We have picked up a few screw mount Pentax SMC lenses for my son's Fujinon SLR, great lenses for around $30, and evidently the Pentax digital cameras can still use screw mount lenses :^)