hi forrest, i've used the SX8 and SX10 on 2023 blacktips
Both feel fantastic but I prefer the SX10. It seems to have a slightly different bend curve and rigs with less leech twist and a marginally flatter top section. The sail makes more power with the SX10 and is more stable/lighter feeling. Definitely an improvement over the SX8
No issues with durability and i think both have the same 2 yr warranty
Never tried a Nolimitz, but approach with caution. Their website does not list compatibility with Simmer