I've had and tested the wf-xm4's and 7hz zeros/moondrop chus for a while now and they are quite similar in technicalities, though I was able to find more details I never heard before with these IEMs, but that's probably because they have better tuning, the xm4's have recessed treble that you can't fully fix with EQ. And I forgot to mention they are both only $20.

I don't have the arias but they should definitely be better in a technical aspect than the xm4's as they are literally the next tier upgrade from the $20-50 IEM range, atleast in technicalities. Your arias may have a bad seal in your ears which could definitely affect the sound and your judgement...