I just found this post because I actually like SlimFast and am thinking of using it again. It's summer time, it's hot, I'm feeling lazy and I'd rather whip up a shake in the blender than have to make choices. LAZY.
In thinking back on the one time I was most successful with losing a significant amount of weight and keeping it off, Slim Fast was involved so I thought, why not.
My JR year in high school, I gained about 40 pounds which is a LOT to pack on in 9 months. It was my first year living in the dorm. I lost it all over the summer (and then some) using SF for breakfast and lunch, eating a lot of fruit for snacks, and having a "sensible dinner"
Once I got the weight off, I kept it off for ages. I didn't creep up again till much much later under totally different circumstances and it's been with me (and building) ever since.
I really really like the taste. The last time I used it, I often mixed in a frozen banana, a tablespoon of natural peanut butter, a frozen container of yogurt, etc. It changes it up, adds a little nutritional value, keeps you full longer and so on.
Just wish they still made the extra fiber version. That was so much more filling.