Hi there, you are not alone in how you feel. I am on an animas vibe, and have had several ocassions of set failures. I now dread doing a new change, I am using the inset 2. My main fear is air bubbles and kinking, doesnt happen that often, but the fear is always with me. I also do horse riding, and am very active, I am forever checking my tubing isnt twisted, and I regularly do ketone tests, just to be sure all is okay. I hate putting in my sets, sometimes they wont release properly, and its hard finding new places to put them. I like having my pump, but sometimes feel I would be better off back on mdi. Its not easy being a pump user sometimes....