Some great discounts on some of these: if you can reccomend any of them I'd be really grateful. Main-Spessart Bahn - 75% off S Bahn Zentralschweiz - 60% off München - Augsburg - 60% off Cargo Volume 3/4 - both 30% off Thank you. I understand these are all routes that are old or not up to fantastic standard but are any worth getting for the decent discounts.
MSB probably the best of the bunch, though IMHO not as nice as RSN. Munich to Augsburg is growing a white beard at this point and is pretty much a straight A to B blast. The Swiss route is okay apart from being very short, the botched signalling/safety systems and the train sounds are to Rivet's usual standards. Haven't bothered with Cargo 3 or 4 - didn't really appeal, just more Class 66 driving and from the cab POV you could be hauling anything behind the loco.
MSB is a nice route, but BR146 and dostos are quit boring nowadays. MSB's BR146 and dostos also layering on several other routes like SKA, HRR and RRO. S-bahn Zentralschweiz is a nice but short route and also the only SBB route in game, so quite unique. I also like to drive the Stadler Flirt, so this is one of my favourite routes for a short drive.
I quite enjoyed S Bahn Zentralschweiz. It is short but there are various sidings and yards that can be explored in free roam.