Guys, Celine is the only singer of the three that sounds amazing and in some instances even better live than on studio. I adore Mariah's voice but she's an awful live singer.

When Whitney's voice was better her live versions of ANY of her songs superseded the studio track. Mariah's not an awful live singer, she's just inconsistent. When she's good she's great, but when she's bad it's horrible. Recently she's doing great.

I voted for Whitney. She just did not have it like she used to.

Even though Celine's nasal tone is annoying mostly, at least she still has her voice at an old age.

I'm giving Mariah a pass because of that Masterpiece called The Emancipation of Mimi

Celine is the weakest. Vocally and musically she just doesnt compare to Mariah or Whitney.
Of course Celine still has her voice, she lipped half of her Vegas concerts.

Celine easily.

Even if she does lip half, she she is still out there performing damn near every night for YEARS. She has performed way more than Mariah and Whitney and her voice is still intact unlike Mariah who also lips.

They were all strong but if I had to choose, Celine.