Westone UM3X - WOW. Everything else I've heard is inferior.
Bowers & Wilkins P5 - Unbelievably underrated. Sounds great.
Klipsch Image S4i - Can't decide between this and the Etymotic MC3. The Klipsches have huge bass for earphones but they're boomy, and a bit sibilant. But the Etymotic's are just a bit too thin on bass for me.
Bose QC15 - SUCK SUCK SUCK!!!
Headphone Amp Inventory:
(All my music is 320kbps AAC VBR)
Just the stock cables. The P5's cable is replaceable but it's 2.5mm at one end and 3.5mm at the other, so it's hard to find a replacement.
Other Audio Equipment:
Harman Kardon SoundSticks II - great but the sub doesn't extend past like 50hz or so, which is disappointing.
Anything. From Eminem to the Eagles. The only thing I absolutely won't listen to is pop, like Lady Gaga or Kesha, that sort of stuff.