Same for me, avoiding Wailing Souls is the only hard part. I've always just healed through Phantom Blasts.

My only real problem on the fight is that I have some channeling in the group and when channeling they automatically turn to face the target.

Priest: Penance
Mage: Arcane Missiles
Hunter: not sure

Because the channeling changed their facing when I strafe they tend to all go in different directions. But even so, I manage to do the fight reasonably easily. I don't try and burst it. Slow and steady and make sure I react quickly to the different abilities.