I want to replace my rented Xfinity gateway with hardware of my own. New products and tech have made me unsure of what to choose. Should I get a modem and a router or just buy a better gateway? And what brand /model do you suggest. My home network consists of two Roku tvs, 2 laptops, 3 phones, 3 tablets, and 1 Amazon firestick. As of now nothing is hardwired via ethernet but I may choose to run ethernet to the two tvs sometime soon. Thanks for any advice.