Thanks for all the info, guys.
This will be a tough choice - the Alco S-2 switcher or the GE 44 Tonner. The GE is about 3 1/2" shorter which makes it a little more "nimble" and maybe easier to maneuver in my relatively small yard with FT O-36 switches, but the Alco is a great looking locomotive.
AHHHRGGGH - no, I can't get both !!