If you do decide to go with Slim Fast as your own personal decision-then on Slim-Fast's website they do have information there-recipes using their shake powders, meal ideas, etc.
I still don't think that SF is the best plan out there-but it has made changes in it's plan recently. They switched their formula to have less sugar, and they changed their meal plans to have different caloric intakes depending on the users individual weight-rather than 1 plan fits all.
Their plan also now includes food with the shake as a meal now-not just the shake. (because the shakes are less caloric now since the sugar has been reduced in them-the RTD shakes went from 220 per shake to 180) So a meal is now a shake and 100-150 calories of regular food to "fill it out" instead of the shake alone.
So-I have to give them credit-they are trying to better their product and make their plan healthier and easier to stick to. I have to give them that at least.
I use a meal replacement occasionally due to my busy schedule, but it is a higher protein, lower sugar meal replacement such as Myoplex, EAS...or a natural sort of bar like Clif.