What is the best desoldering braid?

Desoldering braid is available in various flux types depending on your cleaning process and other requirements:

1) Rosin: Rosin fluxed braid has the fastest wicking action but does leave behind residues that need to be thoroughly cleaned.
2) No-Clean: No-clean fluxed braid is ideal when cleaning isn’t practical or possible. After desoldering, the only thing that remains is a clear, non-ionic residue. For field work, when a thorough cleaning is more challenging, this is the type of braid to use.
3) Unfluxed: In a production or repair environment where the flux is specified and can’t be changed, or when an aqueous flux is needed, you can add your own flux to this type of braid. Unfluxed wick will not remove solder unless flux is added. Different types of fluxes are available in pen packaging, which is ideal for fluxing braid.