I have anthems. I'm 5-6/5-7 and 135lbs and ride 161 anthem octolands. they suck for anything not park. they suck basically anything that isn't almost flat/smooth, as in they suck in hard patches, they suck on mogully terrain, they suck in pow imo. When i'm in pow i always find myself in the backseat because of the center mount, it's like im using my calfs to turn instead of flexing forward into my boots. I demo-ed some rossi s3's the other day and compared it to the anthems. they really made the anthems suck for anything non park. And you can't/not supposed to mount them other than dead center because thats how the ski was made, to be mounted dead center
now the good part about anthems, I love them on jumps and rails. people say you will wash out and all that BS with the anthems. I've never washed out, just make sure you dont land too much in the back seat. I really like them on rails, the center mount def has its purpose there. Maybe because im light/got a short ski but they aren't as buttery as i thought they would be. They are soft though.
If I could do it all over again, I should have just got 171 anthems and them a more specific pow/all mountain ski, something like the rossi s3 or line blends(i havent tried blends yet). but then again I can't really complain, I got my anthems brand new octoland edition for $300 with bindings brand new lol