I liked the ZX2. The only problem was that it had an old OS which you couldn't upgrade, which was annoying. I really didn't care about anything apps from android. I just want to listen to my flac collection :) SQ above all.

I lost my zx2 recently. Must have dropped it in the train from my backpack. Anyway, what's the top of the line hi-res mp3 player now?

I just got my Audeze EL-8 closed back today.  I'm driving it out of NX-2 directly. The cans are big, but I take the train every day and they are actually portable enough to be useable for my daily commute.  It'd have to do a lot of side by side to comment on SQ (I have an HD800+WooAudio WA22...