Secret,
this is just my impression of CAD and atkins. I think people that have less weight to lose will lose slower on either plan and I think CAD is a slower loss than atkins. I think if hyperinsulism is part of the reason you gained weight CAD will help you but you may only lose a half pound a week following the plan perfectly and the half pound loss may not be apparent with the averaging until you've done CAD a few weeks. I also think smaller or older people may have to put a little more effort into it- exercising, balancing, not eating huge portions at RM.

I can relate to your that its almost summer panicky feeling and not knowing which plan to follow either so I'm staying with the plan I feel the healthiest on. Think hard about what is most important to you it should make the decision easier.