I think the Minimed sensors are second rate compared to the Dexcom CGM. I have tried both. Some people get good results with the Minimed sensors, but there have been many complaints. I have rarely heard complaints about Dexcom. There is no CGM at the present time that gives results that compare closely to our meters all the time. There are times they disagree as much as 30 or more points. The CGM is valuable though in other ways. The Dexcom will indicate if your glucose level is rising or falling, and tells how fast the change is happening. That allows you to take action and prevent a troublesome high or low from occurring. The CGM can also be set to alarm when you are going toolow, or too high. I have set mine to alarm if I reach 60 at the low end, and 140 as a high. It will wake you up at night if you have dropped to the low level, wherever you have it set. The problem is, sometimes there are false alarms and you are not as low or high as the CGM says. You have to use your meter to check it out.