The wifi chipset, CPU and Memory are the parts that count, maybe also the ethernet ports and usb. So if you wanna buy a good but cheap router, I would buy a used one that has reasonable price and good specs.
I'd also prefer support for Wifi 6(e), but if you are on a budget, old standards high end hardware is really cheap on the used marked.
So here is what I recommend: Look at the OpenWRT list of hardware filtered by ax[1], sort by CPU MHz and look through the table for a good Mediatek / MT chipset in the column WLAN Hardware (the CPU sorting is "alphabetical", not natural, so it might be that the most powerful ones are in the middle of the table).
I recommend:
- Ubiquity Unify (AP - if you need a router, don't buy)
- AVM Fritz!Box 7520 / 7530 (not in the list, but a german bargain)
- Linksys E8450 (aka. Belkin RT3200)
- GL.iNet GL-MT6000
- Asus TUF-AX4200 / TUF-AX6000
- BananaPi BPi R3
- Xiaomi AX6000 / AX9000
- Netgear WAX220 (AP)I am not particularly on a budget but I don't either require wifi7, I am not willing to pay 3* more than I should. I am lazy and searching for something that is supported by merlin and I will look into the used market as well.
If you don't need USB and could switch to OpenWRT, you could go for a Netgear WAX 202 - I got a used one for 50 bucks, pretty stable so far. Or maybe a TP-Link AX 1800 for 60 bucks new.
Might make sense to get a different brand or model that is more economical.
Simply storing something for decades has costs, which factor into the price.
As for the general upward trends in capacity and price, of WiFi gear, we're now at the point where they are using multipath and phased array antennas to get around the Shannon limit on Data transmission, effectively using the same channel more than once. It's fscking magic!
I can run tailscale on the Opal, but it's constrained to ~2Mb/s. The Mango, I can't even download package lists.
if you want top shelf routers, it will have qualcomm chips (cpu/soc/radio). If it is a budget one, it will have mediatek.
Also, we had a flood of demand and new versions coming out. which literary added nothing. Some will wrongly say "mimo", "beamforming", etc... but those were all present since "wifi5" (ac) and have just been "standardized" in wifi6 (ax), wifi6e (ax+6ghz), wifi7 (be)... the real improvement after wifi5 was simply higher frequencies (pointless since your internet pipe is still crap) and more power (by relaxing power limits). really nothing else because even the features that were standardized might not be present or be badly implemented anyway, like half wifi6e routers not even having a 6ghz radio.
Sure, you get 5 bars of signal strength indicated, but your TCP performance is still garbage.