My daughter skied 143 Celebrity Minis mounted tele at least 30 days this year so far (she'll get three more next weekend) and loved them.
And there are lots of good responses already. But one nuance I think may be missing is that it sounds like you're looking less for a true powder ski than for a crudbuster. Width is only one part of the equation -- stiffness is another, and an important one.
At the start of the season, my wife added a pair of 158 Dynastar Exclusive Legends (75mm waist) to her quiver, to complement her two-season-old 160 K2 Phat Luvs (95mm waist); her 160 Salomon Versa 8Ws (70mm waist) became rock skis. She loves both pairs of skis. But as the season progressed, I noticed that she was using the Dynastars on a lot of days when she would've used the Phat Luvs in years past -- days when we intended to venture off groomed, but when the snow wasn't necessarily fresh. She sacrificed some float, but gained control and speed.
So when Evogear put a pair of used 158 Dynastar Exclusive Legend Powders with Look NX12 bindings on eBay for $140 shipped, I surprised her. And she surprised me by making them her everyday skis for the rest of the season. If we'd gotten another nice fresh dump, I'm sure she'd have broken out the Phat Luvs. And if we were facing a cold day, when the snow would be unlikely to soften, she used the Legends rather than the Powders. But most of the time, she was on the Powders. Similarly, although I had a choice of what many think is too many skis, with waists from 70mm to 136mm, I spent much of my spring on my 84mm wide 186 Fischer Big Stix 84s -- another stiff midfat.
For an east coast ski in a length under about 165cm, I think you may be happier with a stiffer midfat ski with a waist in the 82-92mm range than you will with a softer and wider ski.
As others have suggested, demoing would be a good idea, but I often get deals at this time of the year that would allow me to flip skis I didn't like for very close to what I paid for them. (Of course, then I love them and my quiver bloats, but that's a risk I have to take.) I know that Sierrasnowboard.com has the 158 Exclusive Legend Powders for $320 shipped.