I'm a little unhappy with the perpetual beta-ness of the Unifi firmware, too, so I've been wanting to go to a Ruckus solution for a while
This is so painfully accurate, it kills me to have finally arrived at the same conclusion. After three or four years of deluding myself into thinking that Ubiquiti was just experiencing growing pains, it's become obvious that Robert Pera, the CEO, is so focused on these wild, fringe "innovative" ideas that never really pan out and the development and support teams frenetically scramble to keep up with what's going on. They're not being giving the tools and resources needed to be successful, there's no real clear mission, just an absolute mess of an organization. It's fine for the Apple crowd that just want some pretty blinking lights and simple, single pane management interface with a few basic features. These people care more about pretty retail packaging than hardware specifications, there's definitely a crowd for the space.
I still very much love my Edgerouter(s) paired with UniFi access points, but honestly wish I had made the jump to OPNsense (or pfSense) and Ruckus AP (currently using a little R310 with Unleashed firmware) years ago. I'm obviously not as familiar with the menus having only made the switch in the past few weeks, so having to relearn a bunch, but things are already noticeably more stable than the ceiling mounted UniFi (UAP-AC-LR) access point which was very good despite the aforementioned issues
@Dave Corder so aptly brought up. Perhaps I'll eventually run both access points, but even the 2.4GHz bands are fine for streaming 4K video to multiple devices while dozens and dozens of other devices are constantly connected. Overall, both great choices -- UniFi for cost/ease of use, Ruckus for power users.