Hi Shell. I haven’t posted for a long time but I went from a 640 to a 780 with CGM in June and I’m in the 0.01% which can call it a nightmare! I loved my 640 which was my first pump and couldn’t believe how smooth running it was after 22 years on MDI after getting all my basal patterns set. So when I was due for a new pump I immediately went with the 780 and the CGM smart guard mode I’d been waiting for for so long. Since June, I’ve had: 4 nights where it hasn’t woken me for calibration, 0 times the CGM has lasted for the full 7 days, 6 times it hasn’t even lasted the minimum 5 days and I’ve had to get a warranty replacement, 50 phone calls from Medtronic people trying to piece it together because it works for everyone and not sure why it doesn’t for me…. My endo is about ready to put me back into manual mode because my control was so much better then. Just in that clinic there is two others that Smartguard mode doesn’t work for so it’s not for everyone. To me it is life controlling every waking minute and the 85% less decisions that Medtronic claim Smartguard eliminates is so wrong it’s not funny. You may be better off with G4 as it doesn’t require calibration but don’t expect it to be set and forget, the CGM is way behind libre in my opinion. Sorry, I hope my reply hasn’t burst your bubble too much! But honest is honest….