Need a good 1Gbps router with Good QOS and Gui

Looking for a med priced 1Gbps WiFi router. Can be AC or N. Wireless devices don't need a 100Mbps connection. Strength is more important. I have several kids that I limit gaming usage m~th.

I need a easy way to set time limits and by day. I want to be able to keep their friends from downloading alot. Like a guest connection. l as well. .

Anyone have any experience with a nice router with a good gui. Maybe I can load third party software?