After many years with Comcast Internet, TV and VOIP phone, I dumped it and got AT&T U-Verse. So far, I couldn't be happier.
The picture is better, more channels, HD and DVR at each set and all for less money. If the Internet is slower (which I suspect is the case) it's insignificant. Large file downloads take no longer, IMO, than with Comcast.
Comcast was fast when it worked but too many times lately I had to use my AT&T buisness line to call Comcast to report no phone or Internet. In 10 years, the only problem with my AT&T lines (phone & fax) was noise on the lines from squirrels dining on the outside wire, which AT&T quickly fixed. The squirrel cooked up nicely.