Necro vs Wizzy. Which brings more to a group?

[Vanessa]

So I am considering trying out either a Wizard or Necro and am a bit torn between the two. I'd like to have solo ability, but more importantly I want to group. I already know that Wizzy can quad kite for soloing and Necros can darkness/fear/pet etc. But I was wondering, what do the 2 classes bring to exp groups? Does one offer more than the other? I doubt I'll ever raid, so I am not too concerned with that.