Whats your opinion on leona lewis voice?

i love her soo much!! i think she is the best singer in the world and no one can hit the high notes lyke her. her high notes are soo beautiful! and her balleds are sooo goooood xx just take a look !http://www.youtube.com/watch?v=dCsZNalcaXM&feature=player_detailpage#t=151s