Hiya, i find the bars really filling. For me it takes so long to finish eating them and i can only eat a bit at a time. I leave it in the fridge and then have little bites throughout the day. My favourites have changed from last week, i dont know why. But if you do try them, be sure to leave them in the fridge for a while because they taste much better that way.
I like the bars because it gives you somethings to chew on and you actually feel like you're eating something, compared to drinking soups/milkshakes. Its a nice feeling. You should give them a go for a week. You could even just buy 2 and try them for 2 days and see how you like them.
Good Luck xx