Atkins has worked very well for my wife and me. I've lost nearly 50 pounds, and she has lost about 30. She has been able to eliminate her blood pressure medicine, which she was on for more than two years.
I've slowly added enough carbs back in to maintain what I've lost, and I'm not gaining it back. We have just joined a health club and will begin working out, but I've had practically no exercise other than loading equipment every day.