ive seen the ar5s and they hardly have any back tip, and the topsheet is shiny, so you can see every little scrape or mark on the top, and makes them look old and shitty, but it is up to you.
ive rode em both and to tell you the truth i liked the pe better .... sure i felt cooler on the armadas but hey... for the price go for pe's and by some s912's or p12's with the difference... its like a whole setup for 575 or just the armada boards for that price
there both a good ski i'm cheap and would usually go for the PE but i got a friend who runs a newschool section at a shop and will probably hook the AR5's up for me just as cheap, but overall the ar5 is probably better