Is there anyone using ModX or Concrete5?

[Frappuccino]

Hello friends, Today I came across the Modx and concrete5 CMS systems by chance. I noticed that they are popular among users and are award-winning CMS platforms. In fact, well-known brands like LG, McDonald's, and Mini Cooper use the concrete5 CMS system. Has anyone used these before? Were you satisfied with them? How easy are they to use?