Well, in theory, chef is great.

You can unit test your configuration (which in ansible isn't really practical due to its dynamic nature). You can get completion in your editor...

In practice, though, you write a lot more code and have to comprehend more. Also have a look at community cookbooks, most stuff is very old.

I think chef have totally killed their community by doing that stupid EULA move. https://docs.chef.io/versions/