the 90 has the titanium which makes it stiffer for more big mountain while the blend is more park and soft for buttering and other.
its like how next years prophet 130 is equivilent to next years ep pro..they are practically the same dimensions but the 130 is for sending it down a chute and off cliffs while the ep is for jibbing in the backcountry..if you get my point
True twin means the tail is the same height as the tip, it has nothing to do with width. Dynastar doesn't make a true twin, on the TM's the tip is much higher than the tail.
so out of curiosity, what would we call it when the ski is symetrical dimensionally front and back - ie, u could mount it backwards if you felt the urge.
with that being said, should i get prophet 80's or 90's for my all mountain ski even though i will only use the 90's width for something deeper about once a year if that?