When the snow pack down like it does out west especially when it it has more water content ( atmospheric river snow, at least it not Slurpee like you can get at lower resort on Mount Hood when I lived there ) , also after few of the bluesky days with sun melting the top layer, or you lucky and still have enough soft snow dusted every where, I drop to 80 mm under foot and ride Stokli Montero AX. I sold of my Vokl Mantra M5 and do not miss it. Mantra felted like 2x4 compared to AX especially edge to edge performance. Short turn performance is fantastic and when you want to run it open up carve some turns it joy to ski. Also love it in soft bump using them like berm on mountain bike.
The Montero AR or AX would be a great Ski at Heavenly, Northstar, Palisades/Squaw, Kirkwood, etc, I spent many winter out there when I lived in the Bay Area, now I spend more time in Southern Colorado ( Telluride, Purg, Wolf Creek and Crested Butte).
I have QST 106 188, but these day it mostly parked a large percentage of the day except the day when we were hammered with snow when I look back at all the day I skied this year.
There are some fantastic 86mm to 92mm skis if you want little more width and still give better edge to edge turning performance that will allow you to progress. One thing I like like about AX it let me go anywhere on the mountain from hard snow ( ok not east coast hard ) up to snow over the top of boots with out an issue and next day mogul snow pillows. We had couple great day at Telluride this year hard bellow and 6-8 inches would Rolls in daily, I left QST 106 in the car. I was happy to be on the AX when you broke through powder up to hard layer bellow.
Now at this width I will also go out on 87mm waisted ski the Mirus Cor which is another fun ski, but I would not be what I recommend as your primary ski, but it fun when you have do shallow groomer with your family and still being able to carve clean small arc at slow speed, and later get out into most any terrain you want.
