Help us decide which St Thomas Scuba Adventure excursion.

I am trying to decide between two excursions with St Thomas Scuba and Snorkel Adventures. The first is "Multi Beach Adventure" in which you are taken by a vehicle to two beaches, one on the Atlantic side and the other on the Caribbean side. The other choice is "Secret Caves and Beaches Boat Charter" in which you board a boat in Hull Bay and to to two reefs on the north side, stop at a secluded beach and also swim into a small cave. Both offer the same amount of time snorkeling. For those of you that have taken either of these tours, please offer me your opinion and experiences. I already know I'm going to book this company, just can't decide which tour! We've been to St. Thomas two other times so we've seen the scenic spots on the island and have also done a small snorkel charter. Here's the link to the main site st thomas adventures dot com.

Thank you.