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Loco: Class 25 (from the Weardale and Teesdale DLC)
Route: Weardale and Teesdale

Class 87, WCML Over Shap. Nothing can beat it surely?

Class 66 on the WCML North

No matter what gets me back into playing (This time being AP's Class 43), I always end up in the same place with 1 of 4 locomotives.

West Lines Of Scotland with a BR Standard Class 4, 5, 6 or 7.

Peppercorn K1,North Lincolnshire Railway,

Western Lines of Scotland and any steamer fitting there...

I only have the routes that came with the game but I think the Weardale and Teedale network would be very high on my list no matter what.

Has to be the Weardale & Teesdale network for me - any classic UK diesel traction as I use it as a ficticious present-day heritage line (a massive one adding to the fun you can have with Class 25 and Class 33s up there!)

Currently, the Tehachapi Pass route by 3Dtrains. And for traction VRC's GP40-2, with its wondeful detailing & advanced features.

Before that the very fine PRR Baldwin Centipede has long been a real favourite of mine. It combines really nicely with Horseshoe Curve - a great double act for TS.