Ok, so i have my Purple Heart TH-X00 for some days now, here are my observations:
-Mine don't have cosmetics problem. Maybe i didn't check enough, but the only 'bubble wrap' mark i can see is when i check them with a flashlight, and even then, i didn't wipe them, so maybe they are only exterior. Those head phone are gorgeous in my own opinion.
-They are , probably like most headphone, subject to good instalation on the head. If the headband is not on top of my head, there is some loss in bass, wich, i admit, in some circumstance could be a good thing as...
-..they are bass monster. I come from AKG 601 and Shure SE425, my brain still have some burn in to do to process those in your face sub bass. Does are realy 'fun' headphones, as the frequency is like a smile in an EQ. I love them for engaging beats, and movies with sound effects(WOW!) For critical listening...they do miss the mids a little compare to my others headphones, but i did buyed those headphones for bass and fun, not for detailed mids.
Over all, i'm realy happy with my purchase. I did my listening mostly on my Grace Desing/Massdrop M9xx and on Fiio X3(the two where realy good), and on Samsung S5(as with others headphone, just ok, but lack of bass/overall substance).
I propose to you some bass intensive music(the real bassy part begin at 1m20s):
https://youtu.be/bwmSjveL3Lc