I've heard great things about the latest Burton S-series, with the Voile interface (Burton apparently made the wise decision to get out of that game, since Voile had already perfected it), as far as rigidity goes. Of course, at about $900-$1000, I'm not ready to go there yet. I'll make due with snowshoes for the time being (out outpaced my buddies who were on skis & skins once the going got even mildly steep; they were much faster on the flats).
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we're all living proof that nothing lasts