I'll give them another try too!
Do you have any issues with the tip coming off the nozzle? I feel like it's a little wide and the tip easily gets stuck in my ear canal when removing the Z1R.
Deepest fit with acceptable comfort for me: Hybrid silicone SS tip and Final Audio Type E size S (unfortunately not that secure, IEMs are slowly sliding out)
So far the - by far - most comfortable tip is the Beyerdynamics Xelento (original) tip, size S (Waiting for XS to be back in stock).
It seals a little further out in the ear canal, thus avoiding the pressure points in the canal itself, position is still a good deep fit, just not as extreme as with the Silicone Hybrids. Overall, secure fit and comfort make this my preferred solution so far.
https://www.beyerdynamic.de/ohrpassstuecke-xelento.html
And last but not least sound quality! I'll have to write up a bit more when I find time, but the Z1R is simply amazing, paired with Chord Hugo 2. It's stunning how different it sounds to any other IEM I have heard. The energy, clarity and body of the notes took me by surprise. It takes me a little time to adapt to the quieter midrange compared to bass and treble, but the amazing clarity and separation makes the midrange come through crystal clear anyways and I love it!
Really happy to have this classic in my collection!