Dexcom sensor vs Medtronic sensor

Hi Folks. What do people who have or had the Dexcom G6 Sensor think of the experience? How accurate are the readings and how often do sensors go bad?

My wife uses a medtronic pump and sensor and has spotty accuracy with the medtronic sensors. They either work very well or not at all, and she has a sensor go bad 1-2 days in about 50% of the time.

She's wondering if it's worth the work to go through the insurance process to try to change to Dexcom.

Thanks for your thoughts.