I've just started using Black Diamond Aspects for backcountry. These are pretty amazing skis, featherlight with Dynafits. Here's the story.
The Aspects are 186 cm, 132/90/119 with 20m radius. I'm 6'2" 200 lbs, skiing in new england - everything from powder to ice, crud, crust and hardpack. I put on 1deg base and 2deg edge angles and detuned about 8" back from the tip and 5" from the tail.. Nowhere near enough detune! Insanely hooky, catchy, complete PITA.
Then I detuned about a foot or 14" from the tips and 10" from the tails. The Aspect's tip rise is pretty shallow. Transformation! Easiest turning skis ever. Sometimes too easy in fact, and that's the issue. The Aspects are incredibly carvy skis, they just want to carve turns. The slightest knee angulation and they turn, makes instantaneous short radius carve turns on hardpack (or even crust) effortless. It's like skiing on rails, and that's the issue. It's really, really hard to skid or aggressively jam the downhill ski, as when doing a kind of hop turn on steep hardpack. Edges are uncomfortably catchy, scary sometimes. Powder or softer snow is fine.
FWIW, I also ski BD Verdicts (180cm, 134/102/120, r=26m) and Havocs (185cm, 123/88/115, r=22.5m). They're tuned the same (except shorter detune) and I don't have this problem. I have no idea about respective stiffnesses, rocker or any of that.
I'm something of an old school skier, learned to ski on straight skis but I ski anything. Can edges just be too sharp? Too much edge angle? Seems like a ski should be able to skid turns when appropriate and not just be forced to carve. Or maybe I just suck - though sometimes I still deliver regular beat downs to punks on my antique 205 cm Rossi ST Comps just to make a point ;-). Any thoughts?