+1 to the Skwama (softer) or Otaki (stiffer) depending on your preference
A few other options worth considering:
- Ocun's Ozone is a bit of a budget version of the Otaki, but with slightly less curl in the toebox (still concave, just a little less cupped), a lower volume heel (ideal if you get heel dead space in most shoes), and normal+high volume versions depending on your foot shape/size. I found the HV version to be about a US number larger than the Otaki and 1.5 sizes larger than the Skwama (so a 40.5 Skwama = 41 Otaki = 9.5 Ozone HV) but your mileage may vary.
- Scarpa's Instinct line fills a similar niche to the Skwama/Otaki but fit quite differently in the toe box, so it's worth seeing which fits your foot shape better. I'd skip the Vapor line, which IMO are overpriced and underperforming.
- If you have very narrow feet, consider Unparallel (effectively, the remnants of 5.10 after Adidas destroyed the original brand) - they're a good 5mm or more narrower than Scarpa/LS in the same length