Because Jalal's is one sweet helm.
It has +2 skills, +2 shapeshift skills, which is very handy for boosting lycanthropy, werebear, Fury and such. It also has +30% resists which is very nice. Also gives some stats and some sweet faster hit recovery. Nice defence too.
Cerebus and Spirit Keeper aren't really all that...I know that they are elite helms and in theory should be better than Jalal's but...
Cerebus would be kind of nice on a Werebear to help out with attack rating and could boost damage quite a lot but Jalal is a more balanced item that offers lots of things. Spirit Keeper is inferior to Jalals, in pretty much every aspect, except defence...and you can upgrade Jalal's to elite so...
Also welcome to the forums
