I'd advise you to stray away from the S7. 5 years ago, it was a revolutionary ski, now, there are better designs out there for advanced/expert skiers looking to rip pow. (if you want more on that reasoning, read this:
http://blistergearreview.com/gear-reviews/review-2011-2012-rossignol-super-7 )That being said I don't know where your skill level sits, or what your riding style is, those are important5 to include when asking for ski advice if you expect to get actual, informed answers.
Nonetheless,
You ought to consider the MOMENT Bibby Pro
http://blistergearreview.com/gear-reviews/review-moment-bibby-pro-184cm
and the ON3P Caylor:
A review:
http://blistergearreview.com/gear-reviews/2011-2012-on3p-caylor-191cm
And some video of pow ripping on the Caylor:
http://blistergearreview.com/articles/trip-reports/video-las-lenas-terrain-santa-rosas-snow-bassnectars-lights
Cheers