kinda need more info then, I do rails, how many rails, where do you ski, and do you do ANY jumps and if so how big? I mean, from what you've given me I'd say it's personal preference, but the AR6's are going to last longer and be more durable for sure, I've never skied nines, but I've seen them get completely destroyed in a matter of days.
~WAKIN' UP THE NEIGHBORHOOD TONIGHT!~
~I could carve off a jump so hard I'd come in forward and take off of it switch~
If you are just doing rails, Thalls are going to be better than AR6s(which it seems like people are saying would be better than HHPs). Thalls have all the same materials and build as AR6s, but with the flex points moved in a bit for better butters. Armada makes great skis and is very smart about park skis