Colectivos, subte only when in danger of being late. Taxis just to/from the nearest bus stop when it's too far from where I want to go. No need to pay 10-20 or even much more times to the cab what I pay for the Bus. And most important for me: until now there hasn't been a busdriver trying to screw me ;-) (or probably some charged me like 1.25 instead of 1.10 back last year when those were the prices and I fresh in town, but I could live with that^^) Same for Subte against Bus, feeling more secure and comfortable in the Bus, less pickpocketers imho, better view, even if it takes longer. Well and depending on my mood and schedule I sometimes simply walk.