Yeah, that could be the case.  Sterile is an accurate description, but I have noticed that I'm growing more accustomed to the sound.  It will be interesting to try the TrippleFi 10s after using these for a month or two.  Thanks for the reply.

I just received my 18's yesterday and I'm coming from tripple fi 10s / SE 530s.  Your descriptions accurately describe my experience (they fit and are comfy, yet have a lack of "fun", need for fuller sound, etc.)  I have a Total Bithead on order, to pair with my Zune HD, hoping that it will...