In the planing stages for up coming trip-tentative November. I read the threads going back to June & went to the websites mentioned in the treads. Some of the terms in the threads seem to interchange. i.e. go card, clipper, SF pass, city pass. CG, AC, etc. My 19 yr old son and I plan to be there for 6 days. Is the muni passport the best option for us? Do I understand this pass gives us access to cable car, bus, overhead, hoho etc? That said, what's type of transit system is a BART? I'm guessing the transpo system is as easy to use/understand just like the Tube in London & the Metro in Paris. Input and suggestions welcome! Thanks.