Disregard this post- I don't really need any suggestions anymore.
Edited by Mosstrekker192 - 2/9/14 at 9:21pm
Well... here's where I'm at. I'm no longer interested in an open back pair, and definitely not a noise cancelling pair, and for the record, I think my issues with background noise largely stemmed from the wiring for my pair being off. Maybe a semi-open, but definitely not what I've been emphasizing previously. I was very misled before about what I wanted, but I'm still kind of at a loss- I'm leaning towards a closed back pair with a high end sound stage emphasizing separation, spaciousness, fine detail etc. as much as possible, basically a closed pair emphasizing as much of the qualities that define open pairs while still maintaining strong bass. I was at first leaning towards the Beyerdynamic Custom Pro One, but then I hear the ATH-M50's sound was more balanced. Then the Shure-840 I find out is even more balanced, but almost too much, to the point where it's rather flat, and therefore it's classification as a monitor headphone. Then I headed towards the Denon D2000, but then I find they're out of production and getting a reliable, high quality used pair for a decent price is near impossible. So now I'm looking at the ATH-A900X, but there's likely something else I'm missing (and apparently there's a number of big complaints about the band and fitting, and my head isn't that big), and I still haven't really looked into semi-open pairs.