OMG! EVIL! I have NO IDEA how to decide on this one. They're all top in their own special way... grrr, this is rough.
Celine Dion - Incredibly talented, one of the largest vocal ranges and consistent performers. Been around a long time
Mariah Carey - Quite possibly might have the largest vocal range i know of. I think she's great.
Whitney Houston - I think in the early 90s, she was HOT... but she's not anywhere near what she used to be... sucks
Christina Aguilera - meh, she has a great voice.. i'm just not a huge fan so it's rough for me to give any opinion.
Kelly Clarkson - Seems powerful, Miss Independant is good along with others... i think she'll get better over time.
Amy Lee - I think right now, my <3 belongs to Amy... in a strictly platonic way
I love her voice, but i think she has so much room to grow still! She's been singing for years, but the consistent touring i think is teaching her even more about her vocals.
Leann Rimes - Is she known for having a powerful voice? Her range isn't huge but now that i think about it, what songs i have heard seem "powerful." She also seems like a very consistent performer.
I can't discuss this list without mentioning
Sarah Brightman. She has an incredibly powerful and beautiful voice. I love it
When you put aside personal opinions about individuals character, i don't know if it is possible to judge "power" alone. You have Power/Vocal Range/Consistency... hrm
I remember something Cher said after one of those shows on VH1 where Celine sang next to Aretha Franklin... Cher said "I will never seen on stage with Celine again because no one can match her." I think that is true.
I guess i'd choose Celine
ok *sigh*
-katia