Strange how people hear everything differently with IEMs. I guess it's part of the charm. I will keep the Timeless because they never sounded congested to me.
For example, in the linked Tool song, at the part starting at 8:01, instruments sound in-your-head, the soundstage is quite narrow, yet all sounds are perfectly separated and never congested like they do on 95% of my headphones. Just my opinion. The way this IEM deconstructs complex passage is effortless af, and I will die on this hill.
This is how the Timeless sounds to me: narrow-medium soundstage with average imaging, near perfect instrument separation (instruments share the same rather small space yet permeate each other instead of lumping together and congesting); mids are slightly recessed and cold; highs are bright to very bright; bass is boosted but not excessively, low bass S tier, mid bass B+/-A, just a bit too pillowy; clarity - clear and dry all over the frequency range, very focused sound, micro-detailed to the bone; tonality is hit and miss (but usually hit).
I'd give them an A+. I'm a person who hates narrow soundstages the most in headgear, so the fact that I love them makes them a very special one to me.