I've been looking for good tubing too. My issue is that I'm short, and most tubing is too long for the exercises I want to do. I was thinking about getting the adjustable length tubing (I think they are called LifeLines?) but then thought about getting Cathe's tubing. She is shorter than me and seems to have no problem using the tubing in her videos

I also don't something that will snap back or fall apart. The Bodylastics bands were great for this, however, they were too long for me.