I was totally KOS with Tormax since I tashed him like a zillion times. I raided the arena in kael for 6 - 8 months. Then I joined this guild who were aligned with the Kromzek and Kromrif.
It took me 2 weeks of AE style dwarves 6 hours a night, saving all the heads I could.
In the end I think I had 6 10 slot bags of heads to turn in at the captain in the bank of kael.
Once I had turned in all the heads, I had enough faction to get all my Dazzeling Pieces.
And my take on the armor is:
Skyshrine Armor > Kael Armor > Thurgardin Armor