Jerry,
Couple of things here. The first model you mention is a Railking F3 (probably RK scale but I don't have a catalog in front of me) while the second model you mention is a Premier F7. I get the impression that what you want is the Warbonnet scheme and you're less concerned about the specific engine that it's on. With respect to Proto3, if you're running DCS you'd be able to run multiple trains with Proto2 as well. If you're open to Proto2 then there's a host of engines that might fit the bill for you, and much more cheaply. Anyway, I would counsel you to be a little more specific (or less, as the case may be <g>
in defining what you want and you'll probably have more success.
