Has anyone here used the Sony MDR-7506?? I'm debating between those and the Audio Technica M40x. I've seen many great reviews for both. I'm no audiophile by any means but I want good sounding headphones without the boomy bass. I can easily tell the difference between good sound and bad sound but I'm certainly no audio expert. More and more I'm getting into stuff like movie scores (orchestral), classical and older artists like Billy Joel or Bruce Springsteen. I've never been much into hip-hop/rap but I do like a few songs. I was reading reviews for the MDR-7506 and some were saying that if you're gonna be listening to compressed music it won't sound very good with those headphones. All my music on my Mac is being switched over to AAC 256k either by iTunes Match or by reimporting my CDs. Should I stay away from "reference" headphones if that is the case? Any recommendations would be great. I'd prefer to keep it under $200 (Canadian). These are what I'm using now. http://www.amazon.ca/MDR-ZX600AP-Mo...d=1447000039&sr=8-1&keywords=sony+mdr-zx600ap When I'm out and about I just use the Apple EarPods simply because I don't feel comfortable wearing big headphones outside going places.