The subway, which I assume is the 'metro'. It's fast, reliable and hasn't effed me over once. I took the streetcar, which is a surface train which rides with/in traffic, and it is completely unreliable during rush hour. I can't even count the number of times I got grilled at school cause the POS broke down or had to stop for an accident for half an hour. I rarely take the bus, but the bus experience is the most confined, cramped experience I've ever had.