small, simple and easy to setup with Comcast. Does need Comcast to tune their settings - but this has nothing to do with this Cable modem - it is on Comcast side to ensure the setting. This cable modem worked great. It only have 2.4G but for 60M speed worked good.
Setting up home wifi is a challenge as people often only judge how far or how big the coverage and forgot about what kind of walls and how many walls. You can't expect "one does ALL".
I also bought TP-Link N300 Wi-Fi Range Extender in order to extended the coverage. It worked great! Same thing for the Extender, need to place at right place and need to ensure it also get good signal so it can provide good quality data access.