I have 1 set of heels that I'm willing to part with, but with a set of bindings. Heels are new. $75.
If you're looking for truly an all mountain, I don't think any of these really fit the bill. Actually the Airwalk would be the best of the bunch. Floats pretty well, not real stiff, upturned nose, and would be good for bustin' through crud, but not good for anything over a couple of inches of fresh. It would definitely be too small for you on piste and too small in a bunch of fresh snow, but easy to learn on and very lively. I use a Burton Ultra-prime off piste, till it gets over 3 to 4 inches, because I like the ability of a small board to make radical directional changes off piste and in bumps and crud. (That's why the Bumpyride moniker).
Also have an Oxygen F67 that would more fit the bill. Little bigger board, with more float and still carveable. Included in this picture. $125 plus shipping. This board I've never been on, so I can't really tell you how it will perform other than it looks about right.