Dark Pit for me, I kno people will say "its just a costume" but to me the possibilties are endless, Dark Pit can be more aggressive and if anybody played KIU, they kno there are over 100 weapons (in 9 categorys) and dark pit could go with a claw and club moveset making him 1.5x faster than pit (claws) and B↓ Shifts weapons to club which is 0.5x speed than pit!!!
Just saying!