I had read the first few pages of this thread when it started, but haven't read the newer posts to the end...however, I thought I would throw in my 2 cents...
My wife uses an H120 mostly for lineout connection to a stereo, but recently decided she would like some "earbuds" to wear while working out. She uses and likes my KSC-35's, but felt the clips were a hassle for that type of use.
Hearing you guys talk about the 'mellows, I mentioned to her that they may be good beaters for <$20.
We bought a set and I spent half an hour with them and not to be negative, but I can't see what the big deal is. They sound flat and dull with a muddy blanket of bass that reminds me of EX71's. I realize that I'm used to higher end IEM's...but I was thinking they would be almost in the ballpark of a ksc75 (not even close IMO...though they do isolate a little better than expected).
I have not modded them, maybe that is the secret. My wife is happy with them, so for her they are a good deal.