Crinear Daybreak is honestly in a different league technically.
My recommendation: if budget isn't a constraint, go
Daybreak : it's Crinacle's own brand, his best tuning work to date, and it will genuinely scale with your listening experience. If you want to start cheaper and build up, the
Singolo is the safest Harman-aligned choice for a first IEM.
Also: regardless of which you choose,
experiment with ear tips : foam vs silicone, bore size, insertion depth all significantly affect perceived bass and treble. It's the cheapest "upgrade" available.
Crinear Daybreak vs The 7hz x Crinacle Zero 2 :
https://www.iemranking.com/compare/crinear-daybreak--vs--7hz-zero-2-x-crinacle
Crinear Daybreak vs Kiwi Ears x Crinacle Singolo :
https://www.iemranking.com/compare/crinear-daybreak--vs--kiwi-ears-x-crinacle-singolo
The Daybreak is described as having
"non-existent sibilance" with a low-contrast, non-fatiguing presentation and forward, textured vocals. So your sibilance sensitivity is a non-issue here.
Bottom line: If you listen to vocals, acoustic, jazz, classical → Daybreak is near-perfect for you. If you game, listen to EDM, metal, or want excitement and slam → the Singolo's warm-punchy DD might actually be more satisfying day-to-day, despite the lower technical scores.
What genres do you mostly listen to? That's the deciding factor here.