with that much all mtn, I would say Switchblades. FUll sidewall and good edge hold will help a ton. I have never been impressed with the performance of any armada's I have skied including the ones you are looking at. The lack of sidewall is definitely detremental to its performance. dont listen to that capwall bullshit it doesnt hold an edge as well. THere is noticeable difference between capwall and full sidewall. Also for the Line's, they will be fine, but they don't have very good edge hold. They do have the best specs for what you are looking for though.
The K2's are fine if you want them but they feel like riding cardboard so thats no fun.
OVerall, THe Switchblades are probably your best bet if you care alot about performance. If not, then the Lines
