I used to be a big support of Sonic for years, but have changed my mind as of late.
They skipped my block for fiber, and I thought there could be some issue (like the fact that a Muni electric line runs down it) that might make it impossible for them to install it. So I asked their tech support if it was going to someday come, or never come.
Sonic would not give me any information. They wouldn't confirm or deny that they'd ever be able to install fiber. They said it would probably happen eventually, but refused to provide even a ballpark figure like "next month, next year, 2 years, 5 years or 10 years".
I finally got a response saying that there were overloaded utility poles on my block and the next block, and that was what was preventing them from stringing fiber. They even sent a map showing which poles were at fault.
So I went to the PUC and worked with them to get the poles replaced, all while sticking with Sonic's slow and expensive ADSL.
Once the poles were replaced, I went back to Sonic and they still refused to say if or when they'd be able to install fiber. Finally (several years have gone by now) someone from the responsible department said that there would never be fiber on my block because of the Muni electric line. What? That's what I asked in the 1st place!?!
After that someone else replied and said that they could actually do it on Muni electric blocks now, but they again refused to give me any semblance of a timeframe. Finally, someone else at Sonic admitted that it could be a very long time, perhaps more than 7 years, because "it's as time consuming to do permitting for a block as it is for a neighborhood" and my block wasn't a priority.
That's all fine, but if so why didn't they say so in the first place rather than giving me a run-around for 3 or 4 years? Wait, I think I know the answer: if they admit that fiber isn't coming any time soon (if at all) people might go to a competitor for faster service!
Pretty cynical, and not what I'd hope for in an ISP committed to transparency. But there you have it: as far as I'm concerned, Sonic just isn't as cool as they seemed.
TL/DR: If Sonic skips your block, they ain't coming back any time soon, if at all, even if the issue that made them skip is corrected.