Having done a bit of reading I really like the idea of taking Belial to lead my Dark Angel force. It will also sit well with my aim of expanding the force until I have a full Deathwing army.
My own version of him is coming along nicely. I have gone for the lightening claws option so it will be good to see him in action shredding his way through rotting Nurgle flesh. And just to get him used to the idea, I have tainted his base slightly... ;-)