Reinforcing thread: woolly nylon or Lang Jawol?

[AniseRN]

I searched on reinforcement thread for socks, and found recommendations for woolly nylon serger thread (and I got myself a spool) and for Lang Jawol reinforcement thread (which is similar to the thin yarn my LYS recommends for reinforcing socks). Has anyone here used both of these? Which is better? I worry that the Jawol itself is only 18% nylon, so when combined with my sock yarn, is there enough total nylon content to be robust? On the other hand, the woolly nylon is 100% nylon, but as far as I can tell was not designed for reinforcing socks.

What do the voices of experience say?

(I have a *beautiful* hank of 100% merino Malabrigo sock yarn, and I want to reinforce it with the best!)

Thanks for any advice.

Anise