Classes you prefer to play at lower levels?

[Canadane]

I've been leveling black mage to 80 recently, and I don't enjoy it at high levels. Umbral hearts, Fire IV not resetting the counter, don't miss a step or you've dropped Enochian and need to start over... it doesn't make me feel like a powerful mage, it makes me feel like a fumbling one trying to juggle too many spells and doing a poor job of it.

I would imagine if you get your rotation down pat and master AM and BtL movement, you'd feel like the most powerful of mages.