
GL.iNet
GL-MT6000 (Flint 2)
OpenWrt enthusiast's choice; good value, but lacks 6GHz.

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Go for Mesh. If you are looking for more than 500Mbps connection you might need to connect the units using LAN cables. I used this one for my parents house. https://www.amazon.in/TP-Link-Deco-M4-AC1200-System/dp/B07KJ2TDMR/
Yeah needs to be plugged in. You take LAN out of your main router and connect to one of the units (base unit). Then the second unit can connect wirelessly to the base or via LAN cables. Something like this 1. Router ----- Deco Base )))))))) 2nd Unit 2. Router ----- Deco Base ------ 2nd Unit \--- LAN connection )))) WiFi backhaul Remember when using WiFi backhaul, the max speed of the second unit will depend on the strength of Base unit's Wifi signal where the 2nd unit is placed. My set up is like the router is upstairs computer room. Base unit directly connected to router via LAN cable. The 2nd unit is kept near the stairwell which covers all the downstairs. The range of the units are way better than the BSNL supplied ones.
I had 3 of these. Solid product. Upgraded to BE25s WiFi 7 last month.
I use a mesh system. Used to have 3x TP link Deco M4s. Now upgraded to TP link Deco 25 WiFi 7. Be used to have multiple extenders which were plugged into the wall and basically worked as repeaters but it was finicky. Go for a mesh system
I have a single erro router in the middle of my house it supports mesh, I would like to have more coverage in the yard, quite like the tplink mesh units like. https://www.pbtech.co.nz/product/NETTPL9402/TP-Link-Deco-M4-AC1200-Dual-Band-WiFi-5-Whole-Home?qr=web-share
I have a tp link deco mesh network, initially it was 3 nodes. Iām up to think 6 nodes now across probably 10k square feet over 2 levels. For the most part, itās been perfect.
Itās been in about a year, I think itās ac1200.
Ive had the Deco 4 and now Deco6e. I f'in love it! 3 pods and covers the house and property quite nicely.
I had a TP-Link Mesh system (Deco M4), not possible. Maybe on their routers.

GL.iNet
GL-MT6000 (Flint 2)
OpenWrt enthusiast's choice; good value, but lacks 6GHz.

Ubiquiti
Dream Router 7
Advanced management, but limited Wi-Fi 7 range, SFP+ issues.

Ubiquiti
Dream Machine Series
Comprehensive control, stable for large homes, but slow support.

Ubiquiti
UniFi Dream Router (UDR)
Modular, user-friendly, but tricky advanced setup, poor penetration.

GL.iNet
Beryl AX (GL-MT3000)
Travel king, versatile, OpenWrt, but bulky power adapter.