Ok so I thought it would be nice to have a instant reading of my BGL anytime. Well, the Dexcom does that sort of, but it's been less then accurate compared to my meter. I am on my first sensor and after one day it's already starting to come off. Some also claim the sensors fail early before their 10 day life. That's not good considering their costs. User's recommendation: Not worth it, unless you want the convinience.