For what it's worth, the MDR-V6/7506 DOES have a problem with static electicity. I used to do a morning radio show in a carpeted studio, and at least three times per morning I would hear a "pop", and receive a shock on my left earlobe! To solve the problem, I thoroughly sprayed the carpet, and chair with anti-static spray.
Others with the MDR-V6/7506 have reported the same "problem", though it has never happened in MY studio, which is also carpeted. Go configure!
As for the lack of "tuneful" bass on the V6, I'd LOVE to hear a scientific explanation of what constitutes "tunefulness"! Not to be too critical, or put too fine a point on it, but it's one of those subjectivist "audiophile" terms like "pace" and "rhythm" which in fact have NO meaning, but make one feel knowledgable to say! I've always found "pace" to be particularly silly, since musically "pace" DOES have a meaning...beats per minute, which isn't subjective at all. It can be measured, and counted. Count the beats per minute (playing the same song) with the component you consider to have the worst "pace", and the one which you consider to have the best. I guarantee exactly the same number of beats will have occured in any given time, proving that PACE (again, a term which actually has meaning!) hasn't been affected in the least. Might I suggest "punchiness" or "clarity" as better subjective terms than "tunefulness" or (for God's sake), PACE!!!!???
I'm not aware of ANY headphone which exceeds the V6's bass extension. Again, bass extension IS NOT SUBJECTIVE! It can be demonstrated (with test tones), and even measured (with far more accuracy than can midrange and high frequency response). Generate tones at 10hz intervals backward from 100hz to 20hz using Cool Edit 2000, then LISTEN to them through the V6, and through any 'phones which you suspect may have superior extension (uh, excuse me..."TUNEFULNESS"...tee hee
) and prove it TO YOURSELF that NOTHING beats the v6 for bass extension! Especially compare the tones between 40hz and 20hz on the V6 and your "tuneful" 'phones. If your 'phones don't roll off before the V6, I'll eat 'em!
Sorry to get on my soapbox, but so much audiophile lingo is simply, er, organic fertilizer, created by those who snoozed through science class!