about to get a modem and router to replace the Comcast supplied combo. I mainly use Wi-Fi just for Dorking around on my iPhone(same with my wife). TV Xbox etc are wired. Would the 5 the gen extreme be powerful enough? It's pretty cheap and gets n speed vs the 6th gen that gets ac speed. Not sure I would use anywhere close to those speeds. How do the ranges compare? I have one express to use as an extender. My current Comcast one is only 2.4 GHz and mostly covers the house. Thanks!