I haven't been using these for long, but so far I think this is a great set of resistance tubes. They are better quality than the ones I've used in physical therapy. I love being able to clip one or more bands onto the handles in order to increase the tension/resistance. Not that I'm at that level yet, but it's great to know I can go beyond just these five bands. It also comes with an ankle strap, a door anchor, and a nice, nylon zipper bag.