In SF, I'd also recommend Webpass [1], which uses point-to-point microwave to get to apartment buildings and then piggybacks on phone data lines within the building. They're cheap (by American standards - $500/yr), fast (from 100/100 to 500/500 depending on the building, usually 5ms ping), and have great service (no installation fee, tech was on time to the minute and extremely knowledgeable).
[1] https://www.webpass.net