So the U18 is a great siren. Awakening, enchanting, I'm in the musicians. But .. It does not let me calm down, it's so credible that I have to be on it all the time, it does not turn me off ...
Layla is like a sweet dream ... calm down, relaxing, moving to another world ...
This is what I expect from SE5 as well...
Both are excellent IEM, but I am 50 years old and have a better relaxation than the sparkling
This is the main reason and of course the silicone CIEM.
About cables:
Many people do not believe in the cables. I personally did not find a single stock cable so far adequate for IEMs. Already a normal OCC copper cable (Forza, Ares) can cause big changes in the sound image.
I use a 40- to 50-year-old German OFC litz and have such an organic voice that gives each IEM a real, natural sound.
Never regret our money from the cable (of course within the limits of reason)