Replying to Armada pipe cleaners vs. AR7

I'm trying to decide between the two. I am 5'5 120 lbs and ski 90% park the rest is groomers and relativly light backcountry but i am almost always in the park. I do about 70% jumps and 30% rails in the park and I want to know what ski is better for me. I am worried that the ar7 will be too stiff because i heard that they are wicked stiff and i am really light so that is my biggest concern. I was wondering if anyone knew if the ar50 sidewall thing that the ar7s have really makes a diference, I saw them at a shop and they looked sooo sick but i can get a pair of last years pipe cleaners (if that makes a difrence) for 100 bucks less than ar7s. +k for advise