What is the difference between the two? Are there advantages / disadvantages of one? Is it just personal preference? I did buy some IV3000 when Liz first started pumping, but we've never really used it. However, she should be starting a CGMS in the next few weeks and when she did the trial through the endo, they used tegaderm and it was really helpful. I'm thinking that we will really want to cover the cgms with *something*, I just don't know which would be better or if there's even really a difference. Does insurance usually pay for either / or? Editing to add new questions... Where do you order yours from? I've only bought IV3000 from Animas, but after looking at Amazon, I am amazed at the price difference. Of course, I wouldn't be able to use insurance through Amazon. :-( What size would I need to cover a Dexcom sensor well? What is Tegaderm HP as opposed to the normal Tegaderm? Does anyone use the Opsite Flexifix and if so, what do you think of that compared to Tegaderm or IV 3000? Kind of off topic...before inserting the sensor, do I use just a regular alcohol wipe, or is it okay to use IV Prep or Skin Tac? Thank you!