length and the amount of flex that your ski has will defnitely impact your level of comfurt on your way up to the jump... confidence especially ... i would focus more on the amount of flex than the length, find your ideal length based on your height and then be looking for your flex. say for example, im 6 and a quarter inches. i like the silencer, 179 or 181 or whatever it is. for its length. its stiff as fuck and i could probably use it as a race type ski because its flex level is really low. not a lot of give in the ski.... not noodlie so i use it for more hardpack faaast conditions. msp is a really good ski and you'll prolly love it in the park due to its characteristics and specialization in that area as well as the sidecut in the 07/8 model (which shouldnt be overlooked) will put a little bit more leverage over the edge than other skis. armada is doing it too and they have been for some time now, as well, with there edges... but yeah, say you're heading at a jump at 50 mph, FAST ( i dont know WHY) you're gonna be OBVIOUSLY more comfortable on a ski resembling the MSP based on its stability and edge construction than the line invader just due to the flex of the ski and the chatter against the snow that would scare the shit outta me. but after a while regardless you're gonna know that you're ski isn't gonna come off your foot due to DIN and it may be more comforting when you land... so i dont know, either or... i flexed the invader vs. the msp and i'd take the MSP anyday based on construction, sidewall design and what they're made of....