In terms for best design:
1. Zetsu (Venus fly trap + Yin/yang. Interesting concept)
2. Kakuzu (Mask + head scarf. Stitched body + elemental masks. Cool design)
3. Hidan (Dracula cloak + slick back grey hair. 3 bladed scythe with a metal rope. badass design)
4. Sasori (Hiruko) (Interesting body design like a scorpion. Sasori's body hides inside it. Cool concept)
5. Pain (Deva path) (Piercings + spiky hair makes him look badass. He also is good looking)
6. Itachi (Red eyes + black hair. Good looking like Sauce. But bland IMO like most Uchihas)
7. Deidara (Blonde guy who looks like a girl. His extra mouths are ok. Cool scope. )
8. Kisame (Shark boy rip off. Dude has a ugly ass sword that looks like an ice cream. He also has that annoying ass pointy hair that shark boy also has)
9. Tobi/Obito (Dude with 1 eye wearing an ugly mask that looks like it was drawn by a 5 year old.)
10. Konan (Punk girl with a mouth piercing. She wears leggings + high heels. lol. what a joke.)