Overall I am very pleased with my CMG. I do think I had a defective monitor land tried to contact customer service and it took days for them to respond. They gave me ways to trouble shoot the problem, but my glucose ran way higher than it’s has ever been. When I changed my monitor, it went right back to what I had been seeing before. I think the data gathered from tracking my glucose had been invaluable! I am dropping inches and weight and I know exactly what food will spike my blood sugar, but I also know how to bring it down! Painless and easy to use. Highly recommend!