The one real option is to ask people that work with you, to see how it all works out for them. For instance, I used to work at a place where all carriers claime

The one real option is to ask people that work with you, to see how it all works out for them. For instance, I used to work at a place where all carriers claimed to have good coverage, while in practice, everyone at the office had AT&T: The reason? The building was built in such a way that nobody really had good coverage. What AT&T did was install repeaters INSIDE THE BUILDING, to get a decent connection, and with that, they got easily 2000 subscribers. Similar things can happen with cable too: A lot of people in my hometown rave about Charter's speeds, but in my subdivision, nobody uses them: There is packet loss, outages... so the entire neighborhood ends up with UVerse, which, while far slower and more expensive, it actually works.