Well yes and no, we can PM if you want to but to all: The ZS3 feels like it has no peaks in the FR, only treble roll off and a subbass bump. Very relaxing signature. The ED9 has a much more "audiophile" sound, brighter, more natural as you wish, but it has more peaks so in overall SQ I would rate it worse than ZS3, though they are incomparable for sure as they sound totally different. The ATR though, sounds very very much like the ZS3. Probably the same driver, as I have a hard time finding the differences between them. I think the ATR has less sub bass but more upper bass, a tiny peak downwards in the lower mids causing some male voices to sound a bit artificial, combined with the upper bass peak then. Call it a tiny bit of bass bleed if you want. Tiny bit, overall they sound fabulous. It also has a bit more treble than the ZS3 which is very pleasing. SQ wise I would rate them the same. The tiny differences could also be because of a different fit (havent tried many tips yet).