I'm a little surprised at reliability being one of Ubiquiti's strong points. When I was reading the r/ubiquiti subreddit, it seemed like everybody was complaining about Ubiquiti pushing out buggy firmware updates. Admittedly, this is an issue I've never (knowingly) encountered, but it made me decide to wait some time instead of updating immediately.
I wonder why Cambium would be considered by some "for higher end projects"? It implies to me just for higher end projects, vs maybe other brands. But last I looked, Cambium did not seem that much more expensive than Ubiquiti, which is pretty low priced.