Meizu 5 PRO, the sound has more clarity and musical detail is better, and especially singer voice much better. has very nice 3D presentation. And the most analog sound so far. Tonal is like Colorfly C4 (I'm not saying it better. It just has a little similar in tone)
Letv Max is the best in micro detail and power of OPAMP. Tonal voice is slightly warm. I would say it is meizu with superb micro detail and cleaner treble. or a tiny ibasso DX80 IMO
V10 has just good detail and instrument separation. (which other chinese phones all have in common already) But other thing like what musical sound should have, it lacks there...
To summarize,
Meizu Letv and xiaomi is in the top tier
Vivo Sony LG is tier 2