So, I've given a lot of thought about this--and for me, I think the following is true (for how I ski):
1. Carving, FUN ski for groomers and "off to the side of the run" bumps, trees, whatever you find in your path. This I can see would be the "daily driver" especially with the lack of snow we've had over the last 4 years. I would see this in the 70's width and category.
2. All mountain fun, mid-high 90's width. For some new snow, days when it's snowing and sloppy on and off trail, and kind of like a "do it all ski".
3. 4" plus days, and days when it's soft off the run, where I'm more inclined to hit it hard and ski off the groomers. For this I like something in the 110ish category.
That said, this is what I'll be running this year:
1. Nordica FireArrow 74 (with plate to raise me up a little and provide leverage for groomer zoomers)
2. Stockli SR95
3. Stockli SR115