^ I suppose it's a matter of semantics and of course how we hear. I'm a little reluctant to use terms such as "higher quality" when comparing the sound signatures of universal IEMs at this level. It's more a matter of how the sound is presented to me. The highs of the TF10 are more prominent and energetic in the mix, rather than better than the UM3X's to my ears. My recollection of the UM3X was that I found it's sound signature "lifeless" and I just couldn't engage with it at all. What I regard as lifeless, others may describe as "neutral".