I hear you! Have been there many times.
Roland's sound signature, that I would describe as Neutral-dark - is not gonna change enough to turn it into something like LX or Solaris. It largely depends on music. Music I mainly listen to benefits from this kind of sound signature on top of my sensitivity to excessive bass and treble.
I'm getting impression now, that happy owners of Roland IEM are a minority here..?
Especially after reading toranku impression.
In any case - I wish you good luck finding your end-game IEM...