The best/pick of the bunch
Definition 1 of 2
Pro Tip 1/3Positive Connotation
Used to express approval or appreciation for the best element in a group. 
Out of all the submissions, hers was the best of the bunch.
Pro Tip 2/3Not Always Literal
Can refer to abstract qualities, not just physical objects or people. 
Of all his ideas, the green initiative was the pick of the bunch.
Pro Tip 3/3Informal Speech
Often used in casual conversations rather than formal writing or speeches. 
In the group project, Mike was the best of the bunch with his commitment.