Earlier quoted context omitted.
Sonic.net will likely beat Google in building out gigabit in SF. This megathread has been following their progress in the Sunset (and soon the Richmond) since 2013: https://forums.sonic.net/viewtopic.php?f=10&t=1085 According to the CEO, though some of the issues have been related to permitting/bureaucracy, they have also had some contractor-related setbacks as well.
The problem with Sonic is their 12 month contract
Was paying $100/month for 20Mb Comcast. Now paying $40/month for 30Mb Sonic. Penalty for breaking the 12 month contract early is $150. So after 2.5 months of good service, I'm in the black even if I have to cancel early.
Anecdotally, their technicians were the smartest I've ever met. I learned a lot about DSL and how they get 30MB out of 2 lines. I also learned that my 2014 MacBook pro can't even handle more than ~20Mb over wifi. My iPhone 6S is now running at about 27Mb, and I get 35Mb when wired to the router. I'm in the Inner Richmond.