I would like to buy a nice (at least as nice as you can get <$100) set of cans. I don't really care whether in-ear or over-ear. I mainly listen to instrumental/classical music (ex. ThePianoGuys, Beethoven, Mahler). Right now I am using a pair of Apple earbuds (ick) and I am really getting tired of them. I would prefer not to have to use an amp, but if necessary I wouldn't mind building something like a cMoy, as I do enjoy that sort of electronics. Any suggestions? Thanks for any and all help!