Nice review, thanks. Being another owner of the IM02, I agree with pretty much all you say. If one values more bass than I would recommend the IM03, which also has detail and separation yet is slightly darker in sound and more bass in general.

I also agree with your comments about the IM02.  I am not a bass head myself, but if fit is an issue as it was for me, I would recommend trying UE900 tips.  For me, it made the bass a bit punchier without sacrificing too much from the treble/mids.  Otherwise, the IM02 is a superbly detailed headphone which make for a euphoric listening experience for vocals, especially female vocals.