i used to ride the spks and i thought they were really good. they were light, had a medium-stiff flex, lots of pop, low swing weight, and a good sidecut. my favorite part was that they are narrower in the waist than most park skis, so they are sweet if you like to land in a carve and not have your skis butter out or slide.
the con is that they don't ski the whole mountain very well. the shovel is too narrow and the flex is a little soft in the tail to really charge once you get off the groomers. but if you just want to shred the park, they are super sweet.