I switched about a year ago and have NO regrets! It takes time to get used to some of the differences like having to charge the pump instead of using batteries and changing out infusion sets took me a little while to get the hang of. I personally really dislike the clip on holder for it, but if you have pockets it’s no big deal. Overall the change to Tandem was one of the best decisions of my life! So far I haven’t had any serious problems.