definitely chouji. his first try at butterfly mode, he killed a full health,cs lvl2 jirobo with one strike. his butterfly wings in the war plus baika no jutsu and he's almost the size of gedo mazo (who stopped a crushing mountain just by stretching out his arms). he's the strongest of the konoha 11 after naruto and sasuke right now.
juugo- hit sasuke with practically no damage caused, and was then easily restrained by him. hit bee in the face, and right after bee was making rhymes about how taka were weak. hit raikage with no damage, and then did that bomb thing on raikage from close range, with no damage again. this leads me to conclude that while his attacks look impressive, they're really not all that strong. although he has some insane level of durability.