Definitely agree with the sentiments above. Listening to these I don't feel like I need to be overly critical. It's got the technicalities locked down as though that's a given, It presents them as woven into the fabric of the music and not in contrast to it. A good example for me is clarity. There are lots of IEMs out there with great clarity, but sometimes it feels as if they cut short the natural decay of instruments to achieve this. When the IER-Z1Rs are driven well, I can hear this natural decay simultaneously as it achieves similar or even better levels of clarity than its counterparts. A lot of folks praise the bass, and I do too, but to me, it's again almost like that's a given. I truly value its sheer resolution, and overall natural and effortless portrayal of my music. After a good few months of ownership, I am still very pleased with this purchase.