My DH and DS both work for AT&T, (a disclaimer). We've had WOW and AT&T.
WOW was tremendously expensive, and we had our share of service problems with both the TV and internet service with them.
We now have AT&T...the price is much better, because we have TV, internet, and our cell phone service with them.

My son installs the Uverse system for AT&T...says the internet DSL with Uverse is the fastest out there...he wishes he could get the service, but he can't where he lives...