Originally we had planned 20 days in Switzerland with 5 days Grindelwald and 6 Days Murren. Travel was from Basel to Grindelwald by train, 5 days in Grindelwald with lots of hiking, followed by 6 days Murren, also lots of hiking, a trip to the Jungfrau and Schilthorn. Last 9 days was a flexible itineary and possible car hire.
Because were weren't sure about our exact plans, it was very hard to work out which was the best pass to get. Info from this website and forums replies suggested the Half fare Card or flexi combo tickets. I initially thought the 15 day Swiss Pass, but we had 20 days travel so wasn't sure about that. We decided to get the half fare card. The verdict !
The actual trip: Train from Basel to Grindelwald. 11 days in Jungfrau area with multile bus, train, and cable car trips. Jungfraujoch and Schilthorn. Train to Lausanne, train trips between Lausanne and Montreux. Train to Geneva. Also a CGN Cruise on Lake Leman. Decided to forget about hiring a car because Swiss trains are just so easy and fantastic to use. Ended up only stayed 16 days.
Full price on all transport totalled $1995. With the half fare card we paid a total of $1363. I calculated what we would have spent for the same travel using various other options.
2 x 15 Day 2nd class Swiss passes totalled $1437
2 x (6 day and 5 Day) Jungfrau pass with full fare for rest of trip $1603
2 x (6 day and 3 day) Jungfrau pass (no pass for arrival day and departure day from Jungfrau) totalled $1354
Same as above but combined with 1/2 Fare cards totalled $1274
Bernese Oberland Pass x 2 with Full fare for the rest totalled $1341
From what I can work out, most of the discount travel options provided us with a similar discount. The Half fare cards are a very good option if your travel plans are varied. The cheapest option was actually getting half fare cards and the buying Jungfrau travel passes for the full days that we had in Grindelwald and Murren.
Overall a fantastic trip, definitely have to return for more hiking.
My only negative comment would be the lack of photo etiquitte shown by some travellers. The Jungfrau is a beautiful part of the world and very photogenic, but when taking photos you also need to consider other people. If you're taking photos of friends with some of the beautiful vistas as a backdrop, take 2 or 3 photos and then let other people take photos, you really don't need 30 photos of your friends standing in different poses with the same backdrop. Think, why do I make "V" sings with my fingers when I am having my photo taken, it does look silly, especially so when standing on one leg and tilting at the same time. People on trains don't like having camera's stuck beside their heads and countless photo's taken.
From what I saw, too many people are so engrossed with taking an absurd amount of photos, that they don't actually sit back, look and actually see the beautiful sights that surround them.