SW is more a lifestyle change than a diet, yes the aim is to lose weight but you do it so you remain healthy. Those other diets aren't concerned about your health, they want big numbers for goo publicity, but they don't work of you have a lot of weight to lose, restricting your diet of the vitamins your body needs is dangerous, so if you just want to lose a stone in 2 weeks great, but otherwise SW is better. 1-2 pound a week is what is recommended by consultants as well as doctors, it's the best way to lose weight as well as keep it off, nothing more disheartening than piling the pounds back on x