So up until this point I have mainly dealt with closed back headphones and IEMs. I started out with the Skullcandy Titans (I basically made an uninformed choice based on my price range and what was popular at the time), I then bought a pair of Phillips/O'neill Stretch (they're decent, but not good enough since i've upgraded since then). Around the time that I started really doing research (read: lurking on Head-Fi ) I bought a pair of Sennheiser HD 380 Pros. The truth is, I actually love the way this headphone sounds; I just don't like the fit. I seem to have this OCD thing where I try to make it so that no part of my ear is touching the pad. It gets quite annoying. After that I began to think that maybe IEMs are the way to go, so I played it safe and bought a Klipsch S4i (I' not quite sure how I feel about them still, other than the fact that the treble response is quite uneven and I don't really like the way the tips fit). Finally I purchased a pair of Thinksound TS02s. I love the sound stage and for the money, I think it's a great IEM, but I'm wanting something with a completely different signature, mainly a more "open" sound. I also have a Fiio E17 which I use mainly through my iPhone 4 w/ a LOD. Occasionally I use it with my Macbook Pro, but I've noticed that with a lot of music the DAC has an extremely "reigned in"/ polite sound signature that I haven't quiter gotten used to yet.
I was in a Best Buy the other day and noticed for the first time that they had a "high fidelity" section in the back which included a pair of Sennheiser HD558. I was excited because I'd never heard a pair of open back headphones. After trying out the 558s I wasn't all that impressed, but I also knew that there could be a wide range of factors which may have contributed to my lukewarm reaction. I'm thinking about buying the 558s on faith and assuming that the combination of the ambient noise of the store, poor source/amplifiation, lack of sufficient burn-in, and just my ears being conditioned to an entirely different sound signature were the main reason behind me not being terribly impressed, but I'd like to get some experienced opinions, so I can figure out if maybe a different entry-level open-back earphone might better suit me.
I listen to a very diverse array of music genres, so it's hard to use that as a deciding factor, but I do find myself migrating from being a basshead to appreciating a more balanced sound.