My router is a few years old. Wifi is meh, especially now that we added Alexa to our home over the holidays. I purchased a few hundred dollars worth of inline wall units, and they don't work in our house. Apparently our house is large and has too many circuits (phases?) so they are pretty much worthless. I'm wondering if a new router would give us any faster speeds, or more importantly, any greater coverage? Is there anything new in the last few years? Has technology increased range at all etc.? Thanks.