I priced it out and it was a good bit more than Time Warner, which really surprised me.
But the complaints have been mainly about the lines they run. Most of the people who have tried it had bad problems for a couple months. before bitching enough that AT&T had to come out and run fiber to the houses. Which they try not to do. It uses copper lines to get to your house, which has caused the issues. You get about 25MBps total, between phone, TV, and internet, so the more you do, the more lag there is. And people get lag on their TVs.
You can only get 1 HD signal in your house at a time, not a problem for me but maybe for others. The other main complaints are the HD quality isn't as good. I would probably try it, but it's a lot more expensive. And that doesn't make sense.