Most effective/least effective class in WZ?

[ByteMe]

Ok, I'm thinking of starting a new char and wanted input on the most effective class is in the WZ and why you think that class is better than the others.

Ex: I think warlocks are the most effective since they do massive damage, effective at forts with terrors and other spells, can level non-stop, can heal themselves with soulkeeper, etc.

I'd also like to get ideas of the least effective class in the WZ and why.

Ex: Warlocks are the least effective class because they are extremely slow and die quickly. Once dizzied they are useless, etc.

Let the discussions begin...