I have used Mikrotik at work and have been alarmed at how often professional network engineers make mistakes with them. I found some serious errors through testing (and some exploitation), and when putting them right I could see why the engineers had made that mistake. I caution against them. They don't just have a clunky gui they have a model of the network that people seem to find hard to understand. Shame on Unifi over GPL, but their kit is very good