This seems the most level-headed response I've read so far.

Of the five, he was the most level-headed and least rebellious.

Borjas was one of the calmest, most level-headed individuals he knew.

She is the oldest of the four women, and usually the most level-headed and mature.

At age 25, he appears the most level-headed of athletes.

His statements were insane and yet he was, to the best of my knowledge, one of the most level-headed men I had ever met.

Anna is the eldest and most level-headed of the three sisters.

This last section is the most level-headed assessment of the topic that I have read.

He rarely loses his cool, often being the most level-headed of them.

You strike me as being one of the sanest and most level-headed girls I've come across.