Armada TST

The TST is a rocking ski and is great for all mountain and off piste ripping but I would never recommend it in the park.  With the JJ tip and ANT tail it is a very directional ski.  It has great edge hold and the knifey rockered tip gives you great softer snow performance but if you want something that skis well in the park look else where. 
Look at the Rossignol Scimitar
http://www.skis.com/mens-twin-tip-skis/c1000003492/rossignol-scimitar-skis-2012-p227490.html
Scott Dozer
http://www.skis.com/mens-twin-tip-skis/c1000003492/scott-dozer-skis-2012-p240488.html
Atomic Theory
http://www.skis.com/mens-twin-tip-skis/c1000003492/atomic-theory-skis-2012-p227283.html
or the Nordica Soul Rider
http://www.skis.com/mens-twin-tip-skis/c1000003492/nordica-soul-rider-skis-2012-p230197.html
They are all in the high 90mm range under foot, have some degree of rocker, decent sidecut, and mid flexes.  This combination will give you something that holds an edge on hard packed, has decent float off piste, and will be playful and fee decent skiing switch in the park.

i ski washington too, mostly baker or alpental and was thinking about getting a pair of tst s over the jjs but wasnt sure if the tst s could handle deep days like i want them to... im definitely not going to ski park with these because i already have pipe cleaners. also heard the tst s can handle the hard pack and crud like a champ

on3p jeffrey
on3p jmo
moment pb&j
k2 kung fujas
liberty helix

along with the ones mentioned above these will be better for all mountain shredding that can be from deep pow to lapping the park. the tst is more big mountain/ pow with a lil groomers. there dimensions from tip to tail would not be beneficial when in the park

the 2 best options, both are designed for the northwest