Ease of use of the admin panel, ease of customization. The learning curve for developers is fast if you're familiar with Laravel. Great friendly community that's always willing to help in real time at slack (sometimes you can get help directly from the PyroCMS creator). This CMS will save hundreds of hours reinventing the wheel or trying to create a custom CMS, it's free as in beer and super extensively. You can create everything you need with it. Review collected by and hosted on G2.com.

Lack of documentation. You'll find it, but since the community is still small you're forced to ask in slack rather to find the solution on the forums or StackOverflow. Sometimes answers are outdated. Videos are kind of outdated too. I get that the community is 100% advocated to the CMS development and that documentation is a low priority issue but in order to engage a broader audience this is a must. Review collected by and hosted on G2.com.