I think that what ever plan you are on, even if it says eat as much as you want there is still a point, i think the whole idea is don't be hungry, if you are hungry then eat, but if your eating for the sake of it its not gonna help. thats goes for Red and Green, alot of people cant get there head around it but if you think about it loosing 2 HE is roughly 12 syns thats alot, i also think it works because instead of having synd stuff you would have things that are free on either which means that they are better for you than something thats syns on both.
But i do understand red and green is the better weight loss and if you find ee stops working then you will need to go back to the original plan.
try all the plans and see which ones suit you more.