
GL.iNet
GL-MT6000 (Flint 2)
OpenWrt king, great value, but no 6GHz Wi-Fi.

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The tp link archer AX 53 is currently on offer right now on Amazon and has max speed of 3000mbps so should be well enough for your usage or if you want to move further with virgin. The AX 18 should work too but for the extra 20 quid and with it being on offer may aswell go balls to the wall.
I use TP-Link EasyMesh without any issues. C6 v4, AX23 and AX53 in one mesh network. The AX53 is the master (also works as DHCP server), others are nodes. Works pretty well.
It depends; Wireless extenders and Mesh Systems are both, obviously, **wireless**. However, the main difference between a mesh system and an extender is that a **mesh system** uses a single name for your SSID, providing continuous coverage throughout an area. **Extenders**, as their name suggests, extend your original SSID (e.g., KV Netlink) and create a new "Extended SSID" (e.g., KV Netlink EXT). When you move around, devices connected to the original network won't switch smoothly to the extended network. Sometimes, you might even have to switch manually. A **wired backhaul** is the wired version of the above, where a new router is connected using a LAN cable. Compared to a wireless system, it provides much better performance and fewer wireless interruptions. I use a combination of a **TP-Link XC220-G3V (Dual Band, WiFi 5)** as my main **modem** for my **BSNL FTTH 499 (60Mbps Up/Down)** broadband plan and a **TP-Link Archer AX53 (Dual Band, WiFi 6)** as a **router** on the second floor, connected with a **Cat6 LAN** cable.
TP Link Archer AX53 AX3000 Dual Band Gigabit Wi-Fi 6, you can directly connect this to you fibre connection, it has the ONT port. Has wide coverage also
Using a TP-Link Archer BE550 (Wi-Fi 7) on SLT Fibre. Zero drops. Honestly, skip Dialog/Mobitel 4G entirely if you want real stability. Just get SLT Fibre, disable their crappy stock Wi-Fi, and plug in your own router. If the BE550 is overkill/too pricey, grab a TP-Link AX53 or **AX55** for Rs.\~20k. 100% worth buying a dedicated router.
Both options would be very similar. Both are AX3000 platforms, and would benefit from Ethernet backhaul. I think the difference is that the Archer AX53 was designed mainly to be a standalone router, while the Deco X50 was designed to be a mesh system. It also has AI algorithms to help manage client connections and select the strongest connections. So, the deco could be marginally better in a mesh setup. You may have more control options in the Archer's web interface compared to the deco app, so personal preferences may impact your decision. Personally I'd lean toward the deco, but I'm biased as I'm currently using a deco mesh and it's working well for me.

GL.iNet
GL-MT6000 (Flint 2)
OpenWrt king, great value, but no 6GHz Wi-Fi.

Ubiquiti
Dream Router 7
Advanced management, good coverage, but Wi-Fi 7 range limited.

Ubiquiti
Dream Machine Series
Comprehensive control, reliable, broad coverage for large properties.

Ubiquiti
UniFi Express 7
Affordable UniFi entry, scalable, but complete setup is costly.

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