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

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I would go with the [ASUS RT-BE58U](https://www.wootware.co.za/asus-rt-be58u-be3600-wifi-7-dual-band-aimesh-wireless-router.html). It's double the memory of the similar model for only a little more. It's not as future-proofed as the other because it only has 1GB ports but they should be fine for a 300MB connection and cost half as much. "Gaming routers" are mostly just a marketing scheme to get you to pay more.
Check out the Asus Extendable Routers and AiMesh. I've been really happy with the Asus RT-AX86U Pro - that doesn't do Wi-Fi 7, but I don't live in a big brick house. For your situation, requirements, and budget, consider the RT-BE55. Then if you need more, check out other AiMesh-compatible ASUS routers. Also, use Ethernet cables to connect the network devices - it will always outperform wi-fi backhaul.
I use 2 Asus RT-BE58U to extend the coverage using the AI Mesh setup. Work super smoothly. My previous setup couldn't handle the mesh setup, but I did use the same SSIDs, but it often had to reconnect to the Access Points to keep a proper connection. With the AI Mesh setup, our phones and tablets just switch between routers/access points seamlessly.
Main goal it's WiFi 6e and router should be near to to you. I have Asus be92u and Asus be58u (second is main) and they both working well with streaming but for mesh network I recommend to buy same routers. Also 6ghz network configured as separate network due to 58u doesn't support 6ghz. But honestly 6ghz isn't silver bullet and some devices had problems with that (even quest 3), so I recommend Asus RT-BE82U it doesn't have 6ghz but has good 5ghz speeds
I had issues with my spectrum router has a tp link router that I was using that was an ax 2100 and it worked perfectly but my kid broke it so I upgraded to a different one that has been horrible be5800 I don't know what I have had my modem replaced tried different setting I own a newer built house and I am not sure what is really the issue.
The BE55 is the best bang for the buck, it has the fastest processor and more memory than the others.

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.