-Volkl walls
-Dynastar 6th sense pipes- the stiffest I believe but the spins have more width underfoot. I don't have experience with this years but they have been fairly still in previous years with softer tips and tails.
-Surface double times- pretty damn stiff in my opinion, everyone will argue durability, but I figured I would throw it out there, you could go through 4 of these before the price is equal to that of the j-mo. only goes up to 180 though.
And pretty much every ski labelled as a pipe ski.