After seeing Volpin's excellent work on this helmet I decided to build one of my own. I decided to put all my halo projects on hold for the time being. I initially used the high poly pep model to start on this but then had to rebuild the entire thing. The only part of the pep model which is useful is the visor section for a good starting point on the shape. I will upload most of the photos to my flickr to save bandwidth.
http://www.flickr.com/photos/42349758@N02/?saved=1
http://www.flickr.com/photos/42349758@N02/?saved=1