I'm wondering if I could get more enjoyment from an upgrade to my mid-range gear. I'm no audiophile, and can't tell the difference between VBR 192kbps MP3 and high def in blind A/B testing with my current gear. I listen to music with FLC 8s and Sony NWZ-F886 (Spotify). I mostly listen to heavy metal, hard and classic rock, blues and alternative. I'm considering the below: - Full sized cans - Amp (tube amps appear nice although never heard one, but not sure if they're just placebo and whether they'd suit my music tastes) - Different player (must have Spotify; though I ripped all my CDs years ago, now I'm entirely reliant on the ability to find new music via their suggestions) - Combination of above My budget is up to $1000. Any suggestions?