bah i want both that way i you get the best of both of them which would be total pwnage, but if i had to choose i'd pick sharingan because a: it looks cooler b: mangekyou is teh pwnage c: you can copy anything, see everyone's move before they make it so you can seriously destroy someone without even a scratch, you can hypnotize them, you can use the mangekyou to mind rape them till they die you just have to look at them and they die how freakin awesome is that