Just returned from our trip...W O W!!!!
These ramblings are hopefully helpful to all of those who look for info.
Staying in Wengen and focusing on the BO region we found the Swiss Pass awesome. Easy on and off, discounts or gondola and cable cars, free transportation on the trains, took us all the way to Zurich. Covered some bus fares as well. Awesome!
Over 4 days saw Wengen, Murren, Schlithorn, Jungfrau, the waterfalls of Lauterbrunnen as well as went to the Grindlewald for the first walk. All excellent, all worth the money. Also did tandem hang gliding in Interlaken. Pricey but worth the rush!
Wengen has great views, Murren probably better. In Wengen if looking for a VRBO ask if you have a mountain view and one of the valley. We did and I would stay there again.
If you get a chalet in Wengen a little away from the village; which I encourage, make sure you are comfortable with steep inclines / declines. You will want to walk to town because taxi fare is 20CF even for a 1 mile trip...ouch!
Food is decent in most locations but pricey. (It is Switzerland). We found the COOP to be a great source of food that we cooked at home, no problem.
Cheese shop near in town is a must, go for the yogurt and the cheese. The bakery near the train station is great too!
Swiss people go out of their way to be helpful. Most speak English, Swiss German of course and a little Italian. All willing to help, all appreciate you being a guest in their town.
ask me any questions, I am still on a Swiss High!