We plan to take the train from Salzburg to Luzern. I understand that the mountain scenery is spectacular if I go through Innsbruck. In order to do that, it looks like I need to schedule separate tickets from Salzburg to Innsbruck, from Innsbruck to Zurich, then on to Luzern. Which is fine. But, I also see tickets that go through Buchs (does not stop in Zurich) or Sargans. Does anyone know if either of these routes are as scenic?
Thanks!