Originally Posted by
EddieBirdsell
Nope, I use NNN with a Rossi X-8 Combi boot. I have a mostly detached main ligament in one ankle, so the higher cuff and plastic frame support give lots of extra stability, and the sole is still plenty flexible. I've used NNN-BC a few times and the difference is so slight that it doesn't make sense to have both. I'd pick one or the other and stick with that on my touring/track/light BC skis and my "urban" (clapped out) skis. I'll go to a 75mm from here.
EDIT: Boot I use looks to now be called the X-6 Combi. Rossi seems to rejigger their model designation every couple of years just to keep it confusing.