I can't speak from experience but the 11.16 should be much quicker and better on ice than the other two. They'd all be very stable at speed. The atomics are completely different skis than the k2's though. The 11.16 is a carving ski, not designed for powder like the k2's are. If you're looking for an atomic more similar to the two, you might be interested in the 11.20. I'm sure you can find a post comparing those to the two k2's.