I believe I found that quote here www.head-fi.org/t/621063/the-new-jvc-ha-s500-40mm-carbon-nanotubes/1410
Maybe I'm not a bass head after all. After demo ing akg k550s I still felt the m50s outshone them. Same goes for the hd25-iis.
Btw, this is really a fantastic forum! I just joined after staying anonymous for a few weeks, and I can really see that people are really helpful here.