Atkins have been compared to many other diets and comes out tops every time. And you can lose pretty fast on Atkins, easily 2 lbs a week if not more depending on how much you have to lose. If you do it properly you can also turn it into a healthy way of eating, and keep the weight off. Just make sure you follow all the stages.
diet and exercise. that simple. there is this diet where you eat really good and strict for 6 days and on the 7th day you go nuts eating whatever you want. it throws your body off and you still lost weight. bodyforlife.com I got down to 15% body fat BUT Once i stopped I went back up to 17%, stll not bad.
Eat less, exercise more.