The Noctua NH-L9i-17xx wins in 2 out of 3 comparable specs. Its biggest advantage is MSRP (76% better).
iCUE H100i Elite LCD wins in 1 spec (TDP Rating: 285% better).
Recommendation
Choose NH-L9i-17xx if you want the best overall performance — especially msrp.
Choose iCUE H100i Elite LCD if tdp rating matters more to you.