If you liked the volkl wall you'll probably like the AR7. AR7 is a little stiffer than most park skis. For that reason people like it cause it's very stable on big jumps. You can take it every where else in the park but like the wall takes more effort to butter. If you wanted a little less stiff ski you could go Thalls.
Also if you want a ski that kill park but stiff like wall here are some other options. (just for the hell of it).
http://www.evo.com/skis/rossignol-scratch-2012.aspx#image=47364.Size.LengthCM_160_Image.jpg
Some people still have the extras of the old version cause they love it. From what I hear they kill just as well as the old ones. The 2011 scratch is the exact same ski with graphics. no changes from last year.
http://www.evo.com/outlet/skis/nordica-ace-of-spades-ti.aspx
Supposedly this is as stiff as a wall if that's what you want. Looks sick and last years cheap is always nice. saw a review on Blister so I put that below.
http://blistergearreview.com/gear-reviews/2011-2012-nordica-ace-of-spades
For your size get one between 174-178
Hope this helps.
