ATT charges $59.99 here for 25mb.I just went to AT&T Fibre and got the 300Mb plan and it's $55 a month. No data limits. So far it's solid.
When I had 150Mb tier Cox I had to watch how much data I was using. My kid and then wife were oblivious and they were good about running it over if I wasn't careful, which isn't hard to do with streaming HDTV on multiple TVs. They've since raised the limit on all their plans and it's pretty generous but if you do happen to go over it's expensive. Something to consider...