pay attention to your spectrum bill. Soon as spectrum took over, they started charging for a modem lease. I didn't catch it until last month and they won't credit the past billing cycles (ive had my own modem).
At our office, they won't let us use our own modem. Charged us to use wifi. We had to buy our own router and hook it to their modem.
Around here, the only option is spectrum. Windstream is in a whole other class of suck.