I first installed it a few years ago on a test site to replace Wordfence (after I got tired of them trying to get me to Upgrade To Premium), and never looked back.
The interface is user-friendly and offers more options and features than Wordfence
I eventually got rid of Wordfence all together, and got a few Pro licences (more to support the developer than because I needed the extra features).
The pricing of the Pro version is very reasonable. And the free version does a lot for a free plugin…