Nymo threads are my favorite for bead embroidering.
Economical, but not my choice
I have just started making leather wrapped bracelets and purchased the Nymo thread because it was recommended in the tutorial I purchased. After using it, I am going to try other brands, as the Nymo really frays. Although it is not my choice for thread, it is an economical option and I would recommend it to practice or a good alternative to save on your designs.
I use this type of thread to make my wrap bracelets. It's very sturdy and easy to work with.