Howdy.   Google has failed me...   Is there resource available where one can order orthodynamic/isodynamic/planar-magnetic drivers without being required to purchase the entire headphones?  Also, here on Head-fi, I keep seeing SFI in reference to ortho drivers... what does SFI stand...

I ordered a pair of Mad Dogs (w/ dog pads) a few weeks ago. I've never listened to a pair of unmodded Fostex, so I don't really have a "fair" basis for comparison. Actually, having never listed to any headphones sporting planar-magnetic drivers, *ANY* comparison I use to judge them would be...

A direct comparison with the es10 would be awesome. Anyone have a pair of both? I love my es10s and feel they were worth every penny, but I find myself wearing my esw9s much more often. I can't put my finger on it, but there is something about the sound of the smaller driver with the wooden...