I am also making a GMG using English paper piecing method. I use YLI Select, my favorite hand sewing thread. Because I couldn't find YLI Select in some of the colors I needed I bought Gutterman's 50wt. and I hate it. Have to constantly coat it with Thread Heaven and it still tangles. I use Presencia in my machine, but haven't tried it for hand sewing. I'll try it. If it's as tangle free as YLI, I'll use it because I believe I can get more colors in that brand.