I have always just done the online WW membership. I have done many diets in the past, even lost 50+ pounds doing low carb back in 2002, but the day I started eating carbs again I started gaining it back.
WW works for me because even when I do go off the "diet" the weight doesn't come back nearly as fast. I started back on WW in late February. This time is different for me. I know that to lose the weight and keep it off I have to continue to monitor what I eat and exercise. WW is the only eating plan that I can do for the rest of my life, because I can eat the things I want as long as I do it in moderation.
You should check it out. If is so worth the investment.
PS I get 29 daily points and 49 weekly points, but that is because I want to lose another 45 to 50 pounds.