I'm just curious to hear if any of you guys have bought a headphone more than once, after selling the original purchase. I'm also curious about what caused the re-buy. For me, I really wanted to like the HifiMAN 400. Bought it, was disappointed, sold it, then a few months later, figured I would try it again with a better DAC/AMP. Again, was disappointed with the purchase, and quickly resold it. On the other hand, I sold my Ultrasone Proline 2500, and I deeply missed the sound. One day, I decided I needed it back in my collection, and here I am, listening to it right now! Something about it makes me happy. So, Head-fi, you ever buy a HP more than once? Which one, and why? Did you regret your re-buy? Maybe collectively, we can figure out if a re-purchase is a good idea or not.