My wife and I are planning a trip to Europe this summer and we have two or three days in early July to fill in our itinerary. We will be coming for Saint Gallen, Switzerland and have an option of going to Frankfurt or Munich before going to Salzburg, Austria. While in Salzburg we plan to go to the Eagle’s Nest and tour the “Sound of Music” sites, so we would not plan to do that from Munich. We will be driving so the difference in driving time is well within what we are comfortable doing in one day. Any suggestions on preference would be great.