Higsby98, payware does suck, but I think TrainzItalia's Moffat Road is quite worth it, for it is very high quality. For INPRR's route, just go to advanced search, type Tennessee Pass in, and for the username, type in "inprr". Go to the one that says "Tennessee Pass Route". There is no download link, so you must ask him nicely to give you one.
Hope this helps,
Alex