Is it best to take Railjet or Westbahn? I see that Railjet is more expensive. Which route is best Hauptbahnhof to Salzburg or Westbahnhof to Salzburg?
ÖBB Railjets depart from the Hauptbahnhof, Westbahn trains form the Westbahnhof. Otherwise there is no big difference. Railjets are often overcrowded between Vienna and St Pölten, Westbahn trains in my experience are less so (in first class not at all).
You might want to post in the Austria forum, rather than Switzerland.
Sla - you might want to update your knowledge as Westbahn will now be running two lines which include many Vienna train stations.
Thanks Emily! New hourly "Blue Line" service starts Dec 10 leaving from Vienna Praterstern and stopping at several Vienna stations including Hbf (underground station) on the way to Salzburg. So now there will be service every 1/2 hour to/from Salzburg, alternating with the "Green Line" service from Westbahnhof.
https://westbahn.at/en/timetable18/
Thank you, Emily, I had not noticed that yet. Personally I will stick with the trains to the Westbahnhof. It's so convenient to leave the station, turn left and check into Motel One.