5-6 days in Switzerland

I'd recommend as much time in the Berner Oberland as possible, staying in Murren or Wengen. If you're going to Switzerland, sleep in the Alps. 5-6 days isn't much time, so perhaps the BO and Lucerne. Please also review everything that has been posted here on the Forum under the Switzerland section in the past several months- you'll find a wealth of info, and many of your questions have already been answered.
Safe travels!

Ditto Pat!
I spent four nights in Murren and two in Lucerne, but definitely would have been happy with all in Murren (not that I did not equally enjoy Lucerne, but your time allotment will depend on outward travel logistics and personal interests).
What is really amazing is how accessible the mountaintops are--and in Murren, it feels like you can reach out and touch them!

Where are you going after you depart Switzerland? Going home?

Buceri,
The gondolas, trains, and funiculars will take you to places you cannot imagine, where you will find restaurants and restrooms as well as easy hikes. You can often take one means of transportation up, hike an hour or two, then catch another mode for the descent.

I agree that most of your time should be in the Berner Oberland, specifically in Mürren, Wengen, or Lauterbrunnen. This is the Switzerland of your imagination. Luzern is nice but does not really compare, IMO, if you love the outdoors.

Greeting from Oregon, BTW!

Sam;

Yes, from Switzerland we'll head back home.

If you are flying home from Zurich around noon or later, it is easy to come from Lucerne that morning on the train, which may necessitate at least one night in Lucerne--not a bad way to end a trip!
If Geneva is your departure, I'd stay in Montreux or further west on the lake.

Here is my proposal:

Go from Munich to Lauterbrunnen with only 2 train changes in 6 1/2 hours. EC train Munich to Zurich, then change to a train to Interlaken Ost, then change to a train to Lauterbrunnen. You could stay in Lauterbrunnen, or continue either to Wengen by train on the east side of the valley, or by bus & cable car, or gondola & train to Muerren on the west side of the valley. My preference would be Muerren, a pretty magical car-free village on the side of the mountain with spectacular views. Stay 4 nights.

Then back to Lauterbrunnen, Interlaken Ost to Luzern for 2 nights. The train from Interlaken Ost to Luzern is particularly scenic. After 2 nights in Luzern, take a morning train directly to Zurich airport in 1 1/4 hours for your flight home.

Good plan from Sam.