Check out head-fi.org for all kinds of headphone info. You can do better than the AKG 501. My favorite is the Sennheiser HD600 with Stefan AudioArt Equinox headphone cables and the Grace 901 headphone amp. Really, really sweet combo. I still have a Stax 3030, but prefer the Senn system. However, the Stax should be fine in the long term reliability, but no, you can't wear them laying down. Only something like Etynomics will work for that. Audio Technica headphones are also good (the W100 and W1000, both made with wood), but are available only from Japan thru Audiocubes. You can also order Stax new from japan through Audiocubes and others at far less than US retail.