So recently I spent time with a friend that had some crazy record playing business that had the best audio quality I've ever heard on anything in my life. Call me a born again virgin. Now I'm interested in getting into the scene myself because I love music and know there's a better way. I don't have the money for any top of the line business or for an actual speaker setup, so I figured I'd look into headphones. Personally I'm a fan of closed-back, over-ear headphones. I have about $200-250 to work with, but I know essentially nothing about audio other than I like it. Looking around so far I've seen a few more basic models mentioned frequently--the ATH M50X and the Bayerdynamic DT770 Pro. I presently listen to mostly crappy quality (pandora), but am looking into getting a separate hard drive for flac files specifically. I listen to rock, downtempo, classical, and sort of anything else other than country so long as it's "good." What I'm wondering is whether I should get something that requires an amp (no research completed yet), or if something independent would work best. My plan is to mainly use it with my computer (onboard sound presently, but that can change easily), but also to be able to use with my phone or godawful work computer. My inner nerd wants the best of the best, but being rational I'm thinking of getting something on the lower high quality side (so I won't have to upgrade) to break me into the business. Would the models mentioned be good for that? If so, which is better for my needs? If not, what would work better? Let me know if any extra info will help. Thanks!