I’ve been using the 722 since June and was using the 715 before that since 2005. The 715 & 722 are basically the same pump, but the 722 is able to work as the receiver for the CGMS sensors. I’ve been very happy with the pumps so far. Most of my experiences with Minimed’s customer service have been good. Early on I called about problems with infusion sets and had a bad customer service rep, but I called back the following day and spoke with someone else who was very helpful. One bad experience with one customer service person isn’t enough to say that the company is no good, so if you do have a bad experience when you call just ask to speak to someone else or call back later.
If you find that the infusion sets they send you (they usually send Quick-Sets) aren’t working, call them up and ask for samples of another set. Different people like different sets and what they send you might not be the best fit.
Oh, and believe them when they say to only use Energizer alkaline batteries. Don’t think you’ll be able to save money by using a different brand. They won’t work!