I decided to update our old Netgear router last year. While it had no problems, it was patchy in one or two places in the house. After doing a lot of reading on it, I went for a Nest Wifi mesh setup. Based on their recommendations I should've only needed two extra points to cover our townhouse, but to be on the safe side I went for 3 to avoid the chance of any dead spots in the house.
The system was a total car crash. Slow wifi, dropouts, points going offline and saying they were too far away even though some of them were within line of sight of the router. I spent 6 months getting in touch with support and eventually had to insist on a full refund. Literally the only positives I can say about it are 1) it doesn't look like a router (nor perform like one) and 2) the points doubled up as ringers for our nest doorbell.
I bought a Netgear nighthawk and placed it in a more central location in the house than our old router (our living room in on the first floor, which helps). I can now get perfect wifi in every part of the house and all around our garden. Cost 1/3 the price of the nest system and hasn't let us down once.