Very good plugin.

I have tested several other more famous plugins and it has done better in several points.
Main causes I opted for this plugins:
– Interface easier to understand and more beautiful.
– There are many configuration panels, but all fields have subtitles that make it easier to understand.
– After everything configured the notes of my site were much higher than the previous ones.
– Site speed has increased
– The Free version is enough for most people (keep it up)
– The plugin is lighter than the others

Cons: There are many settings that only people with a good cache system knowledge will be able to tinker and configure correctly.