Counselor Rec vs. Additional Information

For people with ‘extenuating circumstances’ is it better to write it yourself on the Common App or have your counselor focus on it through his/her rec?

I was leaning towards the counselor rec as it offers another perspective. Perhaps it is better for the counselor to say: “This student was very xxx as he dealt with circumstances…” than for me to say it?
So in which cases would it be better for the counselor to write about it and which cases would it better to write it myself on the “If you have any extenuating circumstances that are not reflected in your application, please feel free to share them here” section?

Thanks

Bump!