i spent some time at a meet this weekend with the L3000 and W5000. the L3000 i had heard on a few occassions and its smooth luxurious sound had always impressed me. this time was no different. i listened to them stock SE on an apache/G08 combo. the sound was warm but clear, the sound stage was of reasonable size but by no means large, and the bass was of very good quality and hard hitting. sometimes too much so. on hilary hahn's bach concertos, the bass seemed to overpower the violin. when i switched to some regina spektor and feist, the bass quanity was perfect and the sound glorious. i suspect balanced and recabled, the headphone will excel even more. i enjoyed them very much, but am still turned off by the price. $2000+ is a lot to spend on one headphone, especially since it seemed to peform better with some genres than others.
i also listened to the W5000 (Bal oracle cable) back to back with the L3000. i found the sound stage on the W5000 to be larger, the bass was far less, and there was less texture and layering to the music, but the sound was not thin and the detail seemed sharper and imaging a bit more precise. hahn through the W5000 sounded near perfect. there was a small treble spike but it did not bother me, at least in the short term.
after that i switched to the K701 (Bal black dragon). the sound stage was larger than the W5000 but not as much as i imagined. the detail was about the same, but the W5000 seemed a bit more brilliant at times. my first thought after hearing the two side by side was that the W5000 could replace my K701 for classical.
suffice to say, i still would like to own an L3000 but price will probably prevent this. and i think i may be on the lookout for a W5000 - esp one recabled to balanced.