For pvm, pvp? For pvm both will work, just pick whichever will better round out your build. If you're needing some more resists and fhr especially, Jalal's takes the cake. If you're already meeting the fhr breakpoint you're aiming for and are fine in the resists departement, the Harle Crest might be a nice way to pick up a little extra mf and a little chunk of life and mana. I'd think the same goes for pvp, and I'm assuming if you're using either you're shooting for the 99/99 fcr/fhr breakpoints. In this case the Jalal's might be slightly more useful for getting a nice chunk of fhr right there. Again if you're set with resists and fhr, the funny little green hat would work fine, as the +2 skills will up your bo a bit for some more life (this is why ƒenris' guide recommends it), and you'll be getting maximum pdr with Stormshield. Hope that helps, wasn't sure if this is a pvm or pvp wind druid, so I just addressed both points.