Excellent performance.
No database bloat.
Two-factor authentication keeps your website hack proof.
Does what it says. Honest and fair marketing. No gimmicks.
Really liked its overall features.

Update 25-12-2016
After 3 months of use, I can’t image running a WordPress blog without this plugin.

Update 02-02-2018
After using it for more than a year I would like to give it 100/100. Saved me a lot of money on security.
I have subscribed to PRO and Paul offers superhero like support. Thanks Paul!