I used to think that an integrated system was something I wanted. My first CGMS was with Medtronic. I liked the pump, but had a horrible experience with the SofSensors. I tried to get them to work for almost 2-1/2 years and switched to Dexcom and never looked back. But Medtronic does a good job of integrating the sensors into the “system” software.
The Enlite sensors are better than the Sofsensors, but I have never seen a study that indicates they are as accurate as Dexcom. Anecdotally I know many people who did a trial with Enlite and thought they were awful. Although no CGM technology is perfect, IMO Dexcom is easier to use, has a longer sensor life, and is more accurate. I wouldn’t give that up to move to the Medtronic system. The next generation of Dexcom sensors will have a new inserter and be even more accurate than this generation.
Although Dexcom is integrated into a couple of pumps, their sensor technology has been evolving faster than pumps. In the future hopefully pumps like the t:slim and Vibe will be able to have a software update to use evolving generations of sensors, but right now that is not the case. If you purchase a Vibe or t:slim, you are locked into the Dex G4 without the most recent software upgrade. IMO the G4 is better than the Enlite anyway. And if you don’t want to carry a Dex receiver, the Dex G5 allows you to use an iPhone as a receiver. The Dexcom Android software is expected to be submitted soon to the FDA with an expected release by the end of the year.
Good luck with your decision. I personally would never switch to Medtronic from Dexcom.