We're taking a trip over Xmas from London to Paris and from Paris to Interlaken. We'll then go to Salzburg and Vienna before going home. I've looked at all the various railpasses but I'm not sure about what is the best value. We really only have 3 train trips (Paris to Interlaken and Interlaken to Salzburg and Salzburg to Vienna). But we want to go to Jungfrau and we also have the trip on the Eurostar. I understand that we get discounts if we have a railpass for the Eurostar and that a Swisspass gets us a 50% discount, where as other passes won't.
I'm so confused at this point. I figured out that point to point tickets are about 370 dollars (not including the Jungfrau or Eurostar). But a 3 country saver pass is 410 or so. I'm not going to scrimp 30 dollars if it will save us money on the other trips or save us time in making reservations with local rail lines.
Can anyone suggest the best route to go?
Thanks!