I've only recently returned to some Kumihimo and never have used the rattail cord. I recently purchased this color and love the product and color. The cord is of top quality and this particular color is gorgeous - basically antique gold. It will blend with so many other colors. I just completed a rope and inset it after weaving with turquoise size 11 beads - it came out beautifully and works well with the turquoise/gold colored donut I have.
I love this product and recommend it to anyone starting to learn Kumihimo braiding. You are getting two products when you purchase it. The rattail cord is quality plus you get the reusable bobbin too. I could see using this product for making up kits to teach Kumihimo braiding. The cost per yard is more, but you are getting the reusable bobbin