I have business travel to San Diego (specifically La Jolla) coming up in a few months, and I'm going to extend the trip a bit to enjoy a vacation with my wife. We often rent a car for a trip like this, but we'd like to use only public transportation on this trip if possible.
I'm trying to figure out which pass we should purchase. We'll be staying for just over a week, and since the MTA offers only daily and monthly passes, it's almost certain that we'll get the best value from a monthly pass. But even for the monthly pass, they offer a Regional, a Premium Regional, and COASTER passes for 1, 2, and 3 zones. What does the Premium Regional pass cover that the Regional pass does not? What do the COASTER passes provide over the Regional passes, and what are the zones referred to?
I guess I should clarify that I would like to maximize convenient access to popular attractions in and around the city. Is there a pass that provides access to most popular destinations? Are there notable areas/destinations that this pass would not cover?