Use 'standout' for people or things that draw attention in a specific setting or group. In the art show, his vibrant paintings were the standout pieces.
Pro Tip 2/3
Positive Implication
'Standout' implies a positive difference, not just being different. Her dedication made her a standout volunteer.
Pro Tip 3/3
Not Always Superior
Being a 'standout' doesn't always mean the best overall, but noticeable in a specific quality. He's not the best student, but his creativity is standout.