I agree that NYC transit is good. You dont usually get any problems in Manhattan. If you are in the outer regions and late at night then maybe u can get into some $hit. But that would be out near Coney Island, Far Rockaway, 6 train, Broadway Junction, etc... As long as other people are on the train, you are perfectly safe. Same with the bus system. And NYC transit is so convenient although there is about to be a huge price increase. I took the train in LA and found it to be kind of weird. Seems like it does not have good coverage of the city (relative to NYC). Boston train system is good. London transit is good... but the train/tube/whatever closes too early. I went to a club and had to take a bus back to the place i was staying.