I have and love my OpenWrt One for my main router. I have two, so that I have a backup one I can switch to if the first one ever dies. It is the best device to run OpenWrt on as it is fully supported hardware that has great images/packages for it. Routing speeds/buffer/latency are great, everything just works, price is very reasonable.
I don't use it for my APs, but that is mostly because I already had 3 TP-Link routers setup as dumb APs using OpenWrt that have been working great. If I did it again, I'd buy OpenWrt Ones though. Although Deco mesh kits I've used have worked exceptionally well, and have become my recommendation for friends/family that don't want to do things like run arbitrary packages on their router/APs.
It's got only one LAN ethernet port. Do you use only wifi or did you add a switch between the router and your devices?
another happy user here too. having openwrt with all features working and no tinkering out of the box (since it's their reference target) is a dream. this, plus the warm fuzzies of buying open-source, makes it worth it to me even with the 1GBps limitation and outdated WiFi (i use a separate AP anyway, like you). i swapped my ports in software to have 1GB WAN and 2.5GB LAN (which also lets me power the router with PoE, which i have coming in on the LAN port).
I have 4 OpenWRT Ones and they are good.
If you just want a good WiFi router or access point, unless you need something cannot do (e.g. WiFi 7 or 10 Gbit/s Ethernet), and if want to spend minimal time messing around with routers today and in the future, just get this one.
After getting this, I see no reason to ever buy any closed-source router again.
No need to learn/remember any other Router config either. It's just all OpenWRT, always looks the same, always works the same. Setting up a new one takes me 2 minutes max.
The recent OpenWRT update also brought the one feature the project was most sorely missing: A simple "Download and install latest firmware" button in the device UI.
Now they just need to add an unattended-upgrades option and I never have to log in again after initial setup.