I currently use MM pump (522), and used MM CGMS for 3 1/2 years.
2 months ago I switched to Dexcom, and like it much better. Primarily because it is more accurate for me, and as a separate device, I can frequently check it and react to changes in BG quicker. I think the screen is much easier to read too.
I did not have problems with bleeding or pain when inserting the MM sensor, as others have noted. But did find there was a longer learning curve to get effective calibrations, and then accuracy was 'ok' for 5-6 days.
I would echo Pat's comments. It took me a month to two to "get" the MM sensor to work "ok" (do I hear another echo?). I think the biggest thing for me between the two is the lag time. I mostly need it for the lows and by the time the MM catches up to alert me the low is already known and dealt with at that time. The MM sensor has more value for me in dealing/reacting to any potential high's. Dexcom is helpful for BOTH high's and lows.
When I started MM CGMS in 2007, it was relatively new, and I did not know about TUdiabetes. So having frustrations with getting inaccurate readings led me to search google, and find this site, and others ! Back then, there wasn't as much information as today, but I think even current new users struggle more, and give up on MM CGMS more frequently compared to Dexcom. But there are also many happy MM CGMS users too.
The other reason for me to choose Dexcom was my MM pump is out of warranty end of this year. So by getting Dexcom, I feel I have more choice to switch to a different pump when the time comes, and 'locks' me into another 4 years. When my Dex is out of warranty in a year, and MM's new improved CGMS is available (hopefully), then I'll reconsider. But I could also choose the Ping or Omnipod, or even the Solo if it finally becomes available.
Pat, I just learned yesterday during my long call with the Dexcom rep that you're only tied in for one year. So should I assume that with MM, the CGM carries the same 4-year commitment that the pump does?
But a bolus wizard does NOT mean just pressing one button to bolus. All it does is incorporate your current BG using your insulin sensitivity factor, and the number of carbs you plan to eat, using your insulin:carb ratio, and then calculate how much insulin you need to take.
I'm really confused by the arguments you are making, ref. I don't understand "populating the field" nor when you say just one button push.
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