RouterOS does feel a little clunky for sure, but you can configure _everything_. And once it's set up, it works beautifully and consistently.
Ubiquiti's routers to me just seem to be prosumer routers with an "enterprise" UI on top. Whereas Mikrotik genuinely offer an enterprise experience (also still great for home) with the boring, drab, absurdly functional UI to back it up.
Ubiquiti looks beautiful; but you can't do anything with it.
The GL.iNet Flint 2 came highly recommended (near cult following) from my own pretty extensive research for offboarding ubiquity. It comes with a OpenWRT fork pre-installed, but flashing mainline OpenWRT is officially supported. I've been happy so far.
The Flint 3 just launched, and the headline feature is WiFi 7: that should be less of an issue if you're going with separate APs.
I have a bit of a soft spot for Mikrotik, but I can't help feel like their hardware only exists to sell training.
For our house I tried a Mikrotik, a TP Link and a Ubiquiti AP. The only one that really works in our case is the Ubiquiti. Also for a home that's mostly Apple hardware, you kinda need a manage wifi solution, because Apples WIFI stack have issues switching between APs and needs a controller to kick you off (I don't know if that's still the case). Ubiquiti have one of the only routers that will force Apple hardware to switch APs. Mikrotiks CAPsMAN isn't even really a WIFI/AP controller, it's just provisioning.
For all it's flaws, I still really want to just run 100% Mikrotik gear.
RouterOS 7 with the wifiwave2 package supposedly improves on this by (finally) supporting 802.11r/k/v for roaming between APs.
I don't have any mikrotik hardware new enough to support it so I haven't tried it myself yet and documentation is (as usual) pretty lacking, but like you I want to believe.
I work for a small ISP servicing both fiber customers and a diminishing (Thanks, starlink) number of fixed wireless customers.
We use all Mikrotik hardware for routing. RouterOS is so flexible and capable. But it is absolutely not user friendly.
For large scale commercial deployments we use Ubiquiti equipment. There is always a Mikrotik router but the APs are all Ubiquiti. It’s just easier and cleaner for us to manage deployments that way.
I see no reason why someone just casually playing with their home network would use Mikrotik though.
We use Cambium for Point-to-Multipoint mostly because the price and selection is better than Ubiquiti but we use the wireless backhaul gear from Ubiquiti in a few spots.
To be perfectly honest if Ubiquiti had the right kind of hardware and management capabilities for us to serve as the root of any deployment I would probably use it everywhere.
I tried a Mikrotik router recently but conoared to the Ubi devices, configuration feels so clunky and complicated.