I'm looking for some advice and guidance while purchasing my first custom fit IEMs. I'm looking for something I can wear for extended periods of time while at work, so comfort and isolation are important -- and I'm looking to take a step up in sound quality as well.
I've been looking at things like the JH5, 1964-Q, AC2, that kind of price range. I currently own Grado SR80s, Sennheiser HD280s, and Shure SE110s. My sources are a Cowon iAudio7 for mobile use (playing FLACs or high quality Oggs) and FLAC files at my computer while I'm working.
I've been doing as much reading as I can in the last few days, and I'm feeling a bit overwhelmed by the options available. I'm looking for something that won't be fatiguing, that is well balanced vs. being bass or treble happy, etc. Ideally, something that won't be overwhelming if I need to put some music on and work, but is detailed enough to close my eyes, lean back and focus on the music.
The JH5 seems very well regarded. The 1964-Q seems, to a naive observer like myself, like it would be a step up, but I know just enough to realize I can't make judgments just based on spec sheets and driver counts. Is there a clear winner in this category? Without the ability to try these out myself, I don't know how to go about making a decision. I'd very much appreciate any advise or guidance that anyone has.
On a related note, should I be looking at a DAC/AMP for this kind of listening? I know the sound card on most of the computers I'm using kind of sucks. I feel like the iAudio7 has pretty good sound quality and drives the headphones I've used it with well, but I could obviously be wrong. Would something like the Fiio E7 be appropriate? Unnecessary? Insufficient?
Thanks in advance for any help, and please let me know if there is more information I could provide that would make a decision easier.