I could not get a good fit with the Sennheiser Momentums. I actually thought these were over-the-ear supra aural headphones, until someone told me the cups were supposed to fit OVER my ears. I don't know how this is possible without cutting off living tissue.
The measurements here represent the Momentums used as on the ear headphones. I think this is seriously a case of YMMV
They are horrible. No bass. Nasty nasty ouch ouch at 6-7kHz.
Again, the measurements simulate an on ear situation. The nastiness in the low treble is more severe than the CSDs may indicate. However, on thing I've noted from past CSDs is that dips immediately followed by a ridge are often pretty bad, especially if they are in the sensitive 5.5-8.5k region. The ringing was at a lower frequency than I thought.