I had a heckuva time making the signal reach the living room. Went through WPS and range extenders. The only thing that has worked was a set of four mesh routers.
do you find you need range extenders for 5 GHz? if so, you want mesh. I live in a relatively small apartment, and I’m perfectly happy with my Belkin AC1900. it maxes out at 1.3 gbps on the 5ghz but I’m only paying for 1.2 so no need to upgrade yet
Unifi Gateway Ultra and the Unifi AP Pro 7 is my current setup and I have nothing but praise for it. I definitely don’t recommend consumer mesh systems as I’ve had poor performance with those.