I received my samples from
http://www.allstitch.com which is a nice local store in Baltimore, MD. They sent me 9 8x8" samples of the TW2.0 which is a bit heavier than Stable Stuff, but looks and feels the same. This is the heavier weight of their RipStitch Soft Tear/Wash Away Stabilizer. The other one is 1.5, although I don't have a clue on what the number means.
Anyway, if you would like a sample, send me an email with your address. I'm not using this style of applique in the Two of Us.