Hi...I am wanting to buy a new Cable Modem that also has wifi with it. I currently have an Arris SBG7400 that works ok but I think it may be going bad. I have been looking at the Motorola MG 7700 which is a docsis 3.0 and the Motorola MG 8702 which is a docsis 3.1 I am looking for a longer range of wifi as one of the most important things I would want as I have several Ring cameras hooked up thru WiFi. WE have Spectrum. Anyone have any thoughts on these units or any others you may think would serve me better? Thank you