Yep, I am also fighting with it, kind of having love and hate relationship with it cause it is not my preferential sound signature, with certain music with lots of midbass it sounds stellar but on thinner tracks it tend to sound a bit sibilant to me and tiring, I wish it would have more midbass, so I am also playing with stuff. It is an amazing set just not warm enough to be one and only, more like a great complimentary set, guess it is naive to think that one IEM could be perfect in every way. Cables, tips, sources... From time to time I look at the Shock but the answer is not easy, each IEM has its specifics, guess Shock would also lack in some aspect.
This would be my preference but even it sounds sibilant and sharp on certain occassions.

Ordered a tube amp, should do it justice.