What I like the most about WP Rocket is that it offers a basic cache optimization options feature, which is very convenient if the advanced features that may affect your website are unknown. In addition, they have extensive documentation on the use of each tool or function. Another feature that I like is its wide variety of tools in terms of optimization, such as optimization for CSS code, database, image upload and more.

The automatization of the cache tasks: no other plugin is able to to it best

Everything. It works with tons of other plugins, automatically, without any additional effort on your part. They've also partnered with a bunch of hosting companies to ensure compatibility there as well. The interface is super-easy to use. They preset all the most common settings for you, but also let you tweak everything to your liking. It works wonderfully with Cloudflare, WooCommerce and a bunch of other commonly used products. You can even use your own CDN and it will implement caching beautifully.