Replying to The hardness of choise (park ski)

Well I need new park skis for this winter.
I'm 5'11" tall and 147 lbs heavy.
As I live in Finland we don't have basicly anything else worth skiing exept park so that's what I do 90%-95% of my time while I'm on skis. Of course I sometimes go powder or all mountain but that's very rarely. About stiffnes the scale of it would be something like 5/10 - 8/10 if 10 is stiff and 0 is spaghetti.
About the size of the ski I'm not sure which wouldbe best 175 or 180? If I get long skis they're more stable but the spins will turn slower, and the skis are harder to controll. If I get short skis it's easy to spin and controll but i's not so stable. :P What to do? :D
I started newschool skiing last winter so I'm kinda a beginner. I can do 360 with some grabs and also rail some easy rails. I'm really going to ski alot this year and practise hard.

I've been looking these 7 skis, say what you think about them and tell me which would be good size :P


K2 Public Enemy: http://www.k2skis.com/skis/ski.asp?ProductID=24

Völkl Wall: http://www.volkl.com/ski/freeskiing_wall.html

Line Anthem: http://www.lineskis.com/#/skis/freestyle/park/anthem

Momemt Reno Jib: http://www.momentskis.com/

Armada AR6: http://www.armadaskis.com/product/skis/AR6.php

Dynastar Toruble Maker: http://www.dynastar.com/product.php?id_seg=&id_product=592&id_dyn_category=2&id_dyn_segment=23&acturub=1

Rossignol Scratch GTHO: http://www.rossignol.com/


What do you think I should pick and in what size? :D