The only product I have experience with is the shake and I am very satisfied. I used the product roughly 10 years ago to lose weight, and I'm doing the same thing right now. It's very easy to control your calorie intake because each shake is roughly 400 calories. I have a fairly active lifestyle doing physical labour as well as working out in the gym, and I find that 4 shakes per day keep me going perfectly fine with no additional solid food. There were a few adjustment days, I will admit. My stomach wasn't on board with this switch at all the first few days, also had a few days of headaches, but after that, I was feeling normal again.