I had great success with it when I used it, BUT, I had a lot more to lose, and got very weary of the lack of variety. In the case of a person like me who needs varied meals and lots of choices, I don't think it's a viable option if you want to lose a great deal of weight.
I think it's probably ideal for people who have about six weeks to twelve weeks of weight loss to go who know how to maintian after. It also would work for people who don't mind eating the same things frequently.
1st goal--216 (lowest weight since moving to NC): achieved 5/14/10
2nd goal--203 (lowest weight post college):
3rd goal--199 (Onederland!)
4th goal--189 (where I'd like to be before really trying to get pregnant)
5th goal--180 (100 lbs. from my highest weight ever)
6th goal--169 (overweight bmi)
7th goal--140 (normal bmi)
The Ultimate Goal...