The best lace I have seen was from a company that I do not believe operates outside of their country in Italy.. I think they tried to sell globally but stopped.. Either way they had laces that went from their thinnest to strongest in different grades that u can pick from .. the first grade was so invisible it was amazing, but very fragile. the 2nd and 3rd grades still was invisible but had more durability to it. I would say their grade 3 or grade 4 is similar to the invisibility of most online companies sfs.. except theirs had more durability.