Which is the best tailed beast?

http://naruto.wikia.com/wiki/Jinchuriki

Gaara - 1 tailed Shukaku

Yugito Nii - 2 tailed Monster Cat

Yagura - 3 tailed Giant Turtle

Roshi - 4 tailed monkey

Han - 5 tailed Dolphin Horse

Utakata - 6 tailed slug

Fu - 7 tailed Horned Beetle

Killer Bee - 8 tailed Giant Ox

Naruto Uzumaki - 9 tailed Fox

Sage of six Paths - 10 tailed beast