I have tried all of them.

Lite N Easy.. YUCK.. unless you like bla microwaved tasting food every day.. then go crazy.. but i hated it and it was $$$

TF-is great.. i lost 8kg in 2 months on it... but i then incorporated it with WW.. which works great

WW is FANTASTIC.. its real eating. you can eat whatever you want.. just stay within your points.. its easy.. and now nealry up to 10kg.. fantastic..

But all this with 30min a day of exercise is important! too keep it off.. so many do diets loose and didnt exercise so lost learn muscle mass which is what eats away at fat.. you want muscle!!! and being a women it will be lean which then makes you toned and defined!!!