I only use Isacord because I think it looks the best.
Having fun with the variegated threads.
Getting ready to make a quilt with Patternista line and made this for fun today.
My DD 's name is Maggie.
Click image for larger version.  Name: image.jpg  Views: 49  Size: 196.5 KB  ID: 50703

I have a Bernina, and it is not at all picky about the kind of thread.