know your roots son. the rampage is designed to work similarly to the the old raichle flexon boot (full tilt [k2] boot). full tilt boots are the same molds as the raichles, but they're using better lines and other updated materials. i like my rampages a lot more than the SPK when i tried it out. i realize that the SPK is supposed to be wider so you can articulate your toes and whatnot, but the boot is just built pretty poorly. take the liner out; there's no solid bootboard for the liner to rest on. the rampages work just as well for park riding, and ski much much better.