Now this is great! Thank you for the vid!
I
personally highly recommend
comply with Model X universal and then -- the neutral mode
Use a moisturiser (like a face or hand creme or a lip balm) on the foams, and then they will be soft enough for you to insert them quite
deeply.
Effect? A
superb noise isolation allowing you to take them even on a plane.
Also highs slightly attenuated making the neutral mode tuning practically to die for (at least for me!).
At the same time, lows extended deeply flat to 20 Hz; mids just neutrally exposed, as they supposed to be, not recessed.
Just listen to some classical to hear that it sounds when an IEM reproduces the music accurately as it was recorded
That's my personal opinion