It's super powerful, but with that power comes complexity. I found it too overwhelming to use when building Rails apps. I really missed SequelPro, so I built Beekeeper Studio to scratch my own itch. Others had the same itch I guess!
I use DBeaver a lot, it's a great tool, their sales approach is mind boggling however. It took me several days to buy a license.. what the hell!
I use DBeaver a lot for Postgres and Mysql. I find it to be a great tool. Not as slow as other db clients, yet is full-featured.
I prefer pgadmin, especially now that they dropped the hard dependency on chrome (that was added semi-recently for version 4)
I use it occasionally, it tends to be my app of choice when I need to modify a MySQL database directly.