I use this plugin on a dozen sites and I am extremely happy with it.
The guided tour help after installation was great and saved me a lot of time having to read through documentation to determine what configuration steps I would need to take.
I kept most of the default settings, only a couple of minor changes, until the attacks on WordPress sites escalated recently. Fortunately Wordfence provided site hardening advice in light of the attacks, and I easily adjusted my Wordfence settings with good results.
Thanks to the Wordfence alerts, I now know how frequently there are hacking attempts on my sites. It is comforting to see the specifics and know that the sites are protected.