Svirfneblin Monk seems like a potentially good one - both Wisdom AND Dex bonuses to armour class, and a +4 AC bonus off the bat IIRC.
What are your favourite character builds? I've installed the latest patch and will be buying MotB and SoZ soon, but for now it's just vanilla NWN2.
So I've finally gotten round to installing NWN2 now that I have a decent computer, my Mac Mini.