reading few last pages on the ZST made me hesitant to buy it. I also think that the ATR's treble is nice, neutral , and most importantly not ear piercing. listening to the ATR on long and loud sessions is really enjoyable and non fatiguing. it is on par with my ATH M50 for listening enjoyment (in term of balance of frequencies, although they also differ in character,soundstage, etc). i tried the ZS3, i think it is good sounding. but i don't like the memory wires
for reference, my other listening device is:
Remax S1 pro- I really hate this, the treble is shrill, bass, is muffled, no instrument separation/ soundstaging, finicky fitting. I even hesitant to give this to relatives because i'm afraid it might damage their hearing
ATH CKX5iS - my wife's earphone.this is also have a piercing treble, but the instrument separation is good. i just can't use this for a long session
Stock Xperia Z sony iem -don't know the type. this is really bass heavy. nice for watching movies. mids and treble is recessed
QCY QY19 - nice balanced sound. bass is good, trebles non piercing. not too special, but great for what it's worth and purpose
KRK V6 studio monitors - had this for ages, still love the sound
I am waiting for the TY HI Z32 in the mail,
now i am still curious about the ED9, but if anybody can confirm about the high frequencies? is it piercing? how is it compared to the ATR and ZS3?