Before I had the 680, I used my s500, which I realy liked and considerd them great value for 50$. But now, the 680 have ruined the s500 for me. They sound way more alive, and much more real than my s500, and comfort is way better. At 70$, I consider them a better buy then my s500.   Out of the box they sounded very disappointing so I let them burn... after a little over than 50 hours I can only say wow!!! The diffrance was huge, Suddenly I had a realy nice pair of headphones in my hand.   My first impression about the build of this phones was...