I'm modeling the D&RGW. Denver Union Station, The Moffat Tunnel (in the rockies), eastern plains of Colorado.
I've been complaining, that there isn't enough D&RGW equipment, but recently the MRR manufacturers are starting to release some new stuff. Athearn just released a couple Dash 8s, fantasy scheme, and MTH is releasing some D&RGW passenger cars!
Right now I'm putting together the Colorado Ski Train. So far I have the Intermountain FT AB set, and 3 Walthers D&RGW Yellow w/ Black Stripes. Still searching for more cars.