Have you read the extensive comparative reviews by joker and ClieOS? Both include the NE-6/7M in their reviews. You do know that the NE-6 is the mic-less version of the NE-7M, right?
HeadphoneAddict wrote a very thorough (and highly complimentary) review back early 2009 or so.
They have frequently been identified as a point of comparison for IEM's in that price range since lots of us have experience with them.
I still have a pair, but they don't get any listening time anymore, because I'm so fond of the Fischer DBA-02's.
Edited by dfrost - 9/4/10 at 6:23pm