As mentioned, it's going to depend a lot on area. They all suck, they're all overpriced, and they all will have great deals if you switch.
I had Spectrum and it sucked balls. I knew what I was in for having been a TWC mark, er, customer before, but they had everyone beat on price. Finally gave up and bundled AT&T with DirecTV. Cheaper than Spectrum and the fiber in our neighborhood makes a world of difference.