I can't speak for the anthem but I have the firstblood 180s. They are stiff, so they kill all mountain. It's not really a powder ski as the guy above said. I mainly use them for park - I have them centermounted. They're a bit squirrley, but that's expected since it's not mounted where it would give the most optimal performance. Super solid in jumps and rails though. I have the 07/08s which were a little prone to chipping on the topsheet, but I didn't hear of that problem on the 08/09s.
Get whichever is cheaper. I have a always had a special preference for Ninthward though.