Question Which Travel Pass to Choose for Zermatt and Mürren?

We're spending a few days in Zermatt and then heading to our base in Mürren. We will primarily be exploring the mountains and possibly some hiking trails. I’ve heard about a few different passes like the Swiss Travel Pass and regional options. Which one would be the best value for our itinerary? Are there any specific benefits we should consider, especially for the mountain excursions? Any insights would be really helpful!