First question, leaving your friends aside for the moment, why do you personally want to consider Wi-Fi mesh for your home? Do you have a number of Wi-Fi dead spots or a particular critical spot that doesn’t have enough Wi-Fi?
The biggest advantage of Wi-Fi mesh is for office buildings where people are walking around and don’t want signal to drop as they go. But in Single-family homes, people more commonly stay put while they are using their Wi-Fi device, whether it’s to watch Netflix or play a game. It would be unusual for them to walk out of range while in a single application. So it’s more commonly sold to households as a way of getting rid of dead spots, Not removing a slight stutter when you switch from one Access point to another.
From a home automation standpoint, how many zigbee devices are you running and where? Weaker Wi-Fi makes for happier zigbee, So sometimes less is more, particularly if nothing is really “broken” with your Wi-Fi right now.