Putting the insert system and nocking system aside(not saying either are better), with same spine................A/C Super Slim is heavier than the ACC's and that is the only reason I chose them for my hunting arrows over ACC's.

Mobow, I am not getting into the KE arguments(I like crunching numbers as much as the next guy), but I know what works for me as far as penetration. In other words I like a little more mass weight with the momentum.