I actually didn't buy the W4 for it's bass. In which I honestly don't find all that good. Quality wise that is.
I like neutral sound, but sometimes it gets the point of being lifeless. HD600 was excellent in being neutral and fun.
Tried them some more today, after being burned in for (only) 10 hours. Still sound about the same. They just don't sound all that advanced to me. I actually got the Triple Fi 10 on a loan today (waiting for my PFE to arrive), and got to test it out. The Triple Fi on the other hand is really stellar! It sounds a lot more realistic than the W4, and it doesn't fatigue me at all. While I wouldn't say the W4 fatigues me, it's treble definitely irritates me. Again, not to the point where I throw them out of my ear, but enough to where I'll still take my JVC's over these any day.
Edited by Katun - 9/9/11 at 4:30pm