I did A/B testing with Deco M5 3 pack and Asus AC68U+ 2xAC59U. The fine tuning options in AiMesh are pretty handy.I've also only tried out TP-Link Deco for mesh WiFi. Is there something else that is better?
If you are not using multi-gig WAN then I would say 10G is pretty useless (and expensive). You can use 2.5G switch (less expensive but still big upgrade from gigabit)Any recommendations for 10GbE switches?