You should try them all. Thats what I say because as you said with the Weight Watchers diet all diets require some self motivation and a ton of control. So you will have to worry about that no matter what you do. I have tried them all. The best I would have to say is nutrisystem because the food just tastes better. I lost about the same amount of weight on each. In the end for me it ended with me having to have a Gastric Bypass Surgery.  I am not saying this is what you need or if you are even close to needing something so dramatic but it was the only option i had left and I am so happy that I went through with it.