Just got the Sony NW-WM1ZM2 at many good Head-Fi friends' recommendation.
Other than a gorgeous presentation all the IEMs I've tried it with today, I found it also has a wonderful synergy with the very easy to drive Audio-Technica ATH-AWKG. Following in the footsteps of
@HiFiHawaii808 and
@Zachik 's reports earlier in this thread, these headphones are a good match to a good DAP. With this one, it's a wonderful synergy. The 1Z offers a bit of extra space and openness coupled with great definition, whiich works very well with these warm headphones (in their ZMF pad configuration):