Have they really though? They still do DNS hijacking and bandwidth caps and speed boost for a few seconds only and automatic price increases and worthless bundles and such, don't they? They were so bad they had to rename to Xfilthy or something but their practices didn't really change as far as I can tell. What are some examples of things they've improved?

That's aside from all the political shenanigans they pull, trying to kill municipal broadband and net neutrality. There's scarcely a more evil ISP.

I switched away from Comcast as quickly as I could, and never had trouble with either smaller cable companies or fiber providers.