Registered Magnum in the 6 1/2 inch barrel length. I would though take a 5-inch blued 27, 27-2 or pre-27, I just don't have the money for any of them at the moment.
Don't know about anyone else but I want a model 610 in Mountain Gun configuration. Of course, it has to be pre-lock, pre-MIM and have the firing pit attached to the hammer. Guess I'm not going to have much luck with that one.