sonic.net has had a couple of trial locations in CA; Sebastopol is the location I recall. I don't know about the relative timing of their offer.

I believe they were also the/a possible partner when Google was considering 1 Gbps in one or another location in the South Bay. Maybe someone else knows/recalls more about this.

I'm not in the position, myself, but in my opinion, if you are in Northern CA and sonic.net is an option, they deserve your business -- or consideration, at least.