Like "I picked the Tandem for my 1st pump about 5 months ago, I wish I had done it years ago. I have nothing else to compare it to, but I am amazed by it. The only 2 draw backs I have had, is it does not 'reverse correct' for a BG lower than target; a number you set; and the preset low. I manipulate it by dialing back on the carbs I enter. The other draw back I've had is the Tconnect software and firewalls, but to be honest I am not an IT sort."