its difficult to find a ski that butters well and still holds up on ice and yet still reasonable in some pow.
But I think the ar6 from armada would be a good choice. Personally i prefer a sidewall construction ski eg; ar6, pe/extreme,chronic,dumont/suspect,addict,scott p3,stl, pipecleaner,t-hall, etc)
a cap ski eg; invader, anthem, el-ray,silencer, fujative etc.. I find the cap skis have less pop, not as much 'feel' and not as much grip. But it is all personal preference.
Personally I think the ar6 is money for you, the chronic from line being the best bet if you have to go with line, but it is a bit too stiff even in the shorter lengths.