I've skied 3 out of the 4 skis you mentioned there (AR6s, Walls, and Dogmas). All 3 are very durable (the AR6 and Wall are probably the two most durable park skis out there right now - they bring new meaning to the word bombproof). Right now I'm on the Dogmas and they are AWESOME on rails (haven't had any jump time with them yet - but they seem really good for that), they have awesome edge hold and some really good pop. The AR6s were awesome too, they are good for everything (all-mountain and park) and carve extremely well and are nice and soft in the nose for butters, they hold their own on rails, but they kill it off jumps (probably the best jump ski I've ever owned). The Walls are also super good, a bit stiff, but the symmetrical shape is SO nice on rails and when riding all mountain if you like going forward and switch a lot.
You really can't go wrong with those 3, but if I had to rank them it be like this:
1. AR6 (just great everywhere, so versatile it has to be number 1)
2. Antidogma (this is a very close 2nd and if it was strictly a park ski would easily be number 1, it kills the park)
3. Wall (there is absolutely nothing wrong with it, the other two are just plain better)