agreed, if you are looking for a performance boost rather than look/sound, go with something else.
I gained a little, but that is not the whole reason i got the upgrade. Went for the sound/look and little performance is fine with me.
I agree about the looks of the 2-1. Gotta sacrifice looks or performance when choosing one or the other. That said I got a 25% increase in h.p. with my Big Shots and I think they look great so I'm totally happy.