In the Bay area you have Comcast, ATT and (best of all) Astound in some locations. If Astound isn't the US's best cable company/ISP, they have to be close to that. I just wish they were available in more areas.
I've mainly used Seasonic PSUs for many years, although many of them carried other brand names. Currently I have their Gold 750 watt unit and it's been rock solid!