Do you mean the S:Flo 2 and the HM-602?
Here is a review comparing the S:Flo 2 and HM-801:
http://www.headfonia.com/hm-801-t51-rwa-imod-ipod-classic-and-x1060/
Some people agree about the bass rolloff (in regards to the S:Flo 2), other don't, and still others say you can EQ it so it doesn't matter.































