hmm....i voted itachis but...im not leaving sasuke's susanoo in the dust, i believe that if he actually fought danzou with the version he summoned on kakashi...danzou would have had to do waaaaay more than what he did to break thru the final powered susanoo, i dont count sasuke as having the susanoo we've seen him have when he fought danzou since he's already been shown summoning the powered armored susanoo on kakashi, i believe that susanoo was more like itachis but without the items....and now that sasuke actually have itachi's eyes, i think its safe to assume sasuke is now able to use those items itachi's susanoo had, since itachi's eyes were able to summon those items which sasuke now has...it makes perfect sense