I agree my experience with the Mach 3's (not the power) does not match up with the description of the ski. I just felt that if I wasn't concentrating on keeping it on edge and making tight carves it wasn't much fun. I talked with another guy who tested them too and he felt the same way.
As a side note I am planning on getting Speedmachine 14 boots for next season.
TigerSharks: They were suprisingly light and skied that way. I only skied the 10 foot, so I can't speak for the 12 foot but I excpect it's slightly heftier. I didn't get in the bumps. The bumps at Wachusett are man made and spaced kinda far apart. Add in a 10 degree day and they just weren't appealing. Definitely my top pick for the day.