Which NYC Transit-Fare Increase Seems Fairest?

http://cityroom.blogs.nytimes.com/2012/10/15/for-subway-and-bus-riders-4-paths-to-a-higher-fare/?hp

The Metropolitan Transportation Authority unveiled on Monday four proposals for a scheduled fare increase next March, introducing the possibility of raising the base fare on subways and buses to $2.50 from $2.25 or increasing the cost of a 30-day MetroCard by as much as $21.