Chaos Ogres

I've started work on my Chaos Ogres. I need some advice though on which is a better head configuration. I've got some Chaos Defiler heads to use on my Ogres to make them look a bit more chaosy. I can either use the Defiler heads as head replacements or as masks glued to the normal Ogre heads... I cant decide which looks better. What do you think?

Side by Side.
One on left is as a Mask
One on Right is as Head Replacement

Front View
As Mask

Side View
As Mask

Front View
As Head Replacement

Side View
As Head Replacement

Picture Updates

Some updates. First the progress.

Warhounds are done!

Second rank done, 3rd still needs Halberds...
metal halberds makes it slow...

                                                                                                                       
Its Officially a Nurgle Army!

BSB with CSM Nurgle Icon
Wish I could afford these for all my units...

I've started a new Sorcerer

Side View. Tentacle is pinned under the arm

Front View