Some people argue that aluminum bindings don't flex with the board the way a plastic binding does. This is a personal preference kinda thing though. There is no right answer. To some, that lack of flex equates to extra responsiveness from edge to edge, which I personally love. If you like the feel, then stick with them.
I'm agreeing with you. It stands to reason that the stiffness will give better response - thanks!
09 Bataleon Evil Twin 55
08 Bataleon Fun.Kink 53
08 Bataleon Enemy 61