Hi, I recently started working at an office so I need headphones that are extremely comfortable. I'm not a fan of closed-ear because over time it seems to get a bit hot and moist (gross). The office is quiet, so sound isolation isn't really an issue anyway. I have always been a fan of speakers over headphones. I own a Swan D1080MkII and I really like them. I have been eyeing the Sennheiser HD555s, but was wondering if anyone had any other suggestions. I am willing to stretch my budget slightly for significant increases in performance. Really, I'm looking for the most bang for my buck. The more money I can save while having great sound, the better. One concern I have with the HD555s is durability (cracking). I'm also very open to buying used (as long as it's in great condition). I do not own an amp. Let me know if it is worth getting one with some headphones in this price range. Thanks all.