I use a few year old Linksys Velop mesh system. 3 ac 2200 routers and a Arris SB8200 modem. 1Gb internet connection, although you'll never see more than 866mb through your wireless router. One in my bedroom/office, another in the living room and the third upstairs in the dining room. A little over 3 acres of solid fast coverage.
As of right now I have 39 devices connected and more when others come home. 4 phones, few lappy's, desktop, TV's, apple watches, smart bulbs and switches, etc.
After reading this thread a few weeks back (thanks guys for sending me down the tech rabbit-hole) I was leaning towards the Netgear Orbi AX6000 (Wifi 6 mesh). Seems to be sold out/back-ordered everywhere.
The AX4200 is available though (4.2Gbps vs 6Gbps):
NETGEAR Orbi Whole Home Tri-Band Mesh WiFi 6 System (RBK752) – Router with 1 Satellite Extender | Coverage up to 5,000 sq. ft. and 40+ Devices | Mesh AX4200 WiFi 6 (Up to 4.2Gbps) (RBK752-100NAS)
Buy NETGEAR Orbi Whole Home Tri-Band Mesh WiFi 6 System (RBK752) – Router with 1 Satellite Extender | Coverage up to 5, 000 sq. ft. and 40+ Devices | Mesh AX4200 WiFi 6 (Up to 4.2Gbps) (RBK752-100NAS): Routers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
The AmpliFi ALIEN Router looks cool (touch screen, graphs, etc.) and was high in the review ratings:
With the latest 802.11ax Wi-Fi 6 technology, AmpliFi Alien delivers 4x the overall network capacity and 2x the coverage while reaching true gigabit speeds. It features a tri-band radio with 2.4 GHz and 5 GHz 802.11ax radios optimized for Wi-Fi 6 performance and backwards compatibility with...
Decisions, decisions: purchase a Wifi 6 router, an AquaIllumination Hydra 64 HD LED Reef Light (to go with the two Hydra 32's I have), or a GHL Profilux/Neptune setup.