How much of a diff does specialization do on a Druid, and which to go with?

[VincentVolaju]

Playing a Druid on red99 and was wondering which spec to go because I am not really sure how much of a diff it actually makes? As for as I know it just makes spells of that school cost less mana, yeah?

I am kind of between Alteration for Heals/Snares or Evo for Nukes / Quading. Is there really going to be much of a diff if I choose one over the other?