Here's the dilemma. I have these 558 and although they are seriously comfortable and I love the tingly soundstage, I too find them way too dark and laid back. I'm not a particular "laid back" person, so even when it comes to my laid back music I love some sparkle which my 558 fail to deliver. Are they boring? Well, with certain music I'd have to say yes. So maybe I should've thought ahead, but since they are relatively new to the market, maybe you could say I'm the lab mouse here. Back to the sound, the vocals were simply pushed back into the lower mids and not as sparkly as I would like, and though provided they are an open headphone, I did enjoy the bass alongside the low end for a while, but again, too dark for my tastes.
Enough with my mistake. What I'm now looking for is a pair that will satisfy that crave for a fun signature. A phone that has a bright, warm sound similar to the M50. I LOVE the bass on the M50. Defined, wholesome, full and fun, but not XBx00 boomy either. For my underground/alternative Hip-Hop its deep bass impact is just splendid. But then my beloved M50 expressed it's signature recessed mids that I didn't really notice before with my onboard sound. With the E7 it's fullness is stunning (BTW the M50 to me, loves amping, but can live without it) but is held back by the mids.
A Conclusion... Bottom Line is... I'm looking for a circumaural headphone that is closed (Setup is not in my own room, plus I'm out during the daytime, prefer isolation from the folks at night) has a full, bright but warm midrange, and has a deep tight bass like the M50 but more defined.
Durability is not a problem, and... these will be used at home so I'd say style isn't TOO important, especially since I have my M50 for portable use. Comfort however is definitely something important, though a little sweaty ear issue isn't much to me.
For those who must know, the genres will consist of mostly (Alternative) Hip Hop (Think Blue Scholars, Macklemore, Common, Del the Funkee Homosapien, Common Market, Talib Kweli, Mos Def) occasional Dream Theater, Muse, Massive Attack, and Buckethead/Joe Satriani masterpieces.
Important! Must stay under $350, amplification included. I have the Fiio E7, something to keep in mind.