I've done backvent mod and the core mod (cutting holes)
And I've put some foam wrapped in cut leather from an old headphone bag to make the headband nicer to wear.
Impressions: (better comfort ofc) and sound-wise I like the more airy sound and a bit more bass.
Will do the other steps later for sure!
Edited by mindflayz - 3/15/13 at 3:05pm