well, you really should give some more info, these are two completely different skis. If you like to do a lot of rails and butter around and want a park ski that can go in the pow get the anthems, if you want a baller ski that can shred anything, but is a little stiffer (than the anthems) and can go off some bigger jumps and has an amazing edge hold on ice, go with the AR6s. That's about all I can say based on what you've told me (nothing), if you know where you're gonna ski and what you want to ski as well as height and weight I can help some more.
~WAKIN' UP THE NEIGHBORHOOD TONIGHT!~
~I could carve off a jump so hard I'd come in forward and take off of it switch~