[Glasken]

I would go so far as to pick a region for number 1:

1.) Odus. The lore says that the Erudites wanted solitude, well played.
2.) Cazic-Thule. I want to love this zone, I really do. Its laid out well and is a great compliment to Guk. At least it would be if every other critter wasnt a cleric... that healed through walls. Just too much trouble for most players.
3.) Clan Runnyeye. I am fairly sure I have never been to this zone. Ever.