In reply to Davelim8850:
I have the F10s. I'm confident in my ability to judge their downhill performance. Take the comments on uphill with a grain of salt because I am new to skinning so my technique sucks and I am using an Alpine boot:
I have the DIN maxed out at 10 and they perform well downhill, it felt similar to the Griffins which I had on the same skis before (which I have set to 11). If you're heavy and are gonna huck on them you might want to use the F12s.
I've only been uphill on groomed trails. I bought them as a cheap way to get into touring for exercise in-bounds because I don't have a touring boot, and they do that well. I can't comment on long tours in the backcountry.
Post edited at 18:50