We had Liberty at the old house. It was fine up until about two years ago, when the Internet started dropping, sometimes so frequently we couldn't get a connect. Then we had months of technicians visiting, replacing cabling, modems, etc. They thought the main problem was high signal strength blowing out the modem, so kept adding attenuators. But at least they'd come after you insisted that there was a problem despite what their system was telling them. The Liberty techies were MUCH better than the contractors, who don't know much more than cabling a new system. Finally, a Liberty tech realized there was a problem with the little piece that splits from the line on the street. So we had about a week of non-dropping Internet before we moved. In all, I found Liberty responsive, but it took two years to get a tech that would bother to stay and troubleshoot until the problem was solved.
We have Claro now and so far no problems other than their sales people calling to upgrade us, sometimes five times a day. We have the bottom tier Internet, so the upload is horrible, but that wouldn't be a problem unless you upload videos to youtube and such. We had to go wireless to the router -- I prefer Ethernet -- because Claro refused to put in a new phone outlet by my desk.