I just acquired a nib 28 ton Climax through e-bay.  I also noticed a heavier model (60 ton ?).  If I read right, that means that there are two models of Climax.  I immediately numbered and lettered mine and put it with my two shays (lumber company layout).

The 36 Ton Two Truck Heisler would be sweet.  That would be my first choice. My second choice would be a switcher like SP1238 with the oiler tender.