[Judge_S]

Personally, I find the barbarian to be the best class. This is simply because there haven't been any class-only limitations, on weapons or anything.
This makes the barbarian, and everything else, able to learn and do virtually anything. The barb is best because though it doesn't start with literacy or piety or legardemain, it can learn it. Then there's the strength bonuses to keep the speed up, etc.