Get the Praxis Concept in 177cm. That is what I did to fill the very niche you carve out. An you and I are exactly the same size,
My home hill is Sugarloaf, so the conditions we ski are identical. I got a remaindered ski that Praxis had made up with carbon at about half price I skied it early in the season on packed powder, almost as a novelty, for a 115mm ski. My bad. I have 12 pairs+/- of skis. And these Praxis are the most versatile by far. I brought them out more and more as the season progressed - in every condition. As you would expect, they are brilliant in 6"+ of fresh soft. But that lasts, as you know, one to two runs. You can ski these boards the rest of the day. Very stable in cut up, infinitely turny without any hint of instability or twitchyness - except when running flat. I assume that is true of many skis of this ilk. Much better and broader skill set than my Souls 7's which I did not pull out once this year.
Read about the unique geometry of this ski. Basically there is a camber from tip to toe and a second behind the heel. Underfoot the ski is flat So when you flatten it, they carve like no 115mm ski has a right to. Quite an amazing feeling. I found myself looking down just to verify that I was on a pair of "fatties." But these are not your daddy's fatties.
Beautifully crafted - the equal of the various Kastles I own. Full metal top edge protects the very nice "southwestern" bear motif. I don't know what bases they use, but they are the hardest bottoms in my fleet. Nary a mark after several trips. Whether it is the killer tune, the geometry, the carbon or Nevada fairy dust, the hold on ice is positively freakish, even with what is likely a 1/1 edge.
Simply put, while I have a boatload of skis, with the Kastle MX 78's on one end and the Concepts on the other all the rest are relegated to self-indulgent bling.
Best of luck
A definitive review from a fellow Vermonter:http://www.epicski.com/t/111313/review-praxis-concept-177cm-2011-2012