I NEED HELP CHOOSING A ROUTER/MODEM COMBO

rarely in my life have I ever recommended an modem/router combo device. 

Reason why is that modem/router combo devices have the firmeware controlled by the isp as well as not all isp's support the same devices. 

For example, if you bought a modem/router combo device to use with spectrum and then changed to Tmobile internet later, you wouldn't be able to use the modem/router combo device with tmobile because the modem isn't compatible. Versus if you bought a router seperate from the modem, you'd be able to connect the router to the tmobile's router and expand your coverage. 

what I'd do? when I last used spectrum, they weren't charging for the modem. That could have changed but if it hasn't, let them supply the modem, and then you only need to buy a router. If they do charge for a modem, then just ask them what modems are compatible with their service and the speed tier you're paying for. 

that would cover the modem, then you'd just need to purchase a router that meets your needs.