I'm very happy with my Google WiFi mesh router.
I don't actually use it in mesh configuration because a single station covers my ~2000sqft two story house and garage well enough. And adding more pucks is supposed to be very simple... Just plug them in and press a button.
And Google is a leader in internet security and software development so I'm very confident there are very few firmware vulnerabilities, and they get fixed promptly when they do pop up. The software side of things was number one on my list because that's all a router is, and many vendors will release a nice piece of hardware that rarely receives software updates.
It's dead simple to manage. It does require a smartphone app (for some reason there is no web interface, perhaps a web interface wouldn't fit their security model). You can manage it remotely.
And it has all the features I've needed. Port forwarding, bandwidth management, a dedicated guest Wifi network, etc.
They have since come out with the Google Nest Wifi which does the same thing for more money but you can still get the older Google WiFi pucks like I have
for <$100 ea.
It doesn't do WiFi 6. But that's still pretty rare. But it does do 802.11ac. I just tested it and I got 285Mbps from my router to my smartphone through a couple of interior walls.
Keep in mind your internet plan is probably going to be the limiting factor on speed regardless of what you go with.