Depends on your style and type of riding you are going to do with those skis.
Powder: longer is better, always
In bounds: if I cant find the right length, research another brand that has the right size and feel
Park and pipe: shorter, but some like it longer.
Shorter skis dont forgive in powder and hard pack. They can develop a speed wobble and can act unpredicatably at higher speeds. However, they are lighter and have a better reaction time. Pivoting on short skis is much easier than longer skis.
Longer skis are more stable in all conditions, but you have to pay the price in weight
Yeah, I quoted myself, that just proves how awesome I am
I got it...You do future spins, you get PAYED! it's that simple!
2.Do future spins in competitions