The Ignitions and the Sparks are better for park. The sparks are by far the softer ski, and probably are better for jibbing with in some cases.. but they are also a cheaper made ski, and by that account are not as good. both skis have very similar dimensions. 84 underfoot, but the ignitions have a wee bit more sidecut. 122 in the shovel and 112 in the back, while the sparks are 118-84-110. The ignitions are probably the better ski for all mountain kind of stuff, while still able to kill in the park. They have a shitload of sidecut compared to other skis in the same realm. The turning radius is more than any other ski in the class, so on groomers these things could carve it up with any other ski out there.
the sparks are more like something in the realm of a salomon thruster or maybe even thalls.. although maybe a little less durable.