Well I've listened to the ER-6s quite a bit now and have this to say:
-They serve great detail
-Slightly metallic highs
-Slightly bright
-Controlled, tight, but understated bass (using a bass boost on an equalizer or portable player fixes this)
-Crisp and clear
-Suprisingly comfortable
-Good blockage of noise
I'll be keeping them and enjoy them for quite some time. I'm thrilled that I was able to find them for $85 from an authorized retailer (Tweeter online).