It took me a while to find a store that had the S4s in stock, but I finally laid my paws upon a pair about an hour ago, and WOW - the difference between these babies and the ones I got off of eBay is like night and day! I am tickled pink! These are phenomenal - crystal-clear in all pitch ranges, gorgeous balance, just amazing in every way - nothing like the muddy, soupy sound of the ones I must assume are counterfeit. Another difference I noticed (in addition to the ones pointed out by others further up this thread), is the relative texture and thickness of the two cords - the phonies have a very thin, smooth cord, whereas the McCoys have a more matte-textured, thicker cord that strikes me as likely being of higher quality. Hope this helps anyone who is trying to determine whether or not theirs are the real deal - if they aren't, do yourself a favor and go dish out the extra dough for the true-blues; you'll be oh-so-glad you did!