I've done SureSlim, and it was ok, I had a weakness for carbs which I knew anyway, they bloat me up and I do put on weight if I eat too many carbs, always have done and know that is my downfall really.
I did like the diet, didn't like my counsellor though - she very obviously had bought in to a business and had never had a weight issue in her life, and when I had a bad week she spoke to me like I was stupid or something.
That aside, I did like the diet, the food and the recipies but I found it hard going there was too much cooking from fresh every meal and it didn't fit in with my lifestyle - I found I was skipping meals because I didn't have time to cook or didn't have the right ingredients in.
I did like the food though, very much and it was a good diet for me, it was just too high maintenance and as I say I really didn't like the counsellor.