the best anbu is sai.

[Funky Tiger]

Itachi or kakashi would be the best.

edit: maybe kabuto too.

 

[Bananawolf]

I think Itachi takes the title for this one

 

[RinneBlitz]

Itachi-san is the best ANBU member of all time, currently - Sai, because Kakashi isn't in ANBU anymore, Yamato is incapacitated and Danzo is dead.

 

[Shiann]

Agreed GO SAI!

 

[Neonian]

We dont even know the other Anbu's