for a PVP or a PVM neccy?
on a PVP ide max out prison(more applicable) you can trap a charactar without tele and spirit them up.
on a PVM I would get Wall, cause you can make a barrier to channel monsters where you want them to go(if you have the patience ^^)
Or for a more common sense alternative, I think maxing wall leaves you 1 free point to put into a golem or something...