I LOVE the bars and don't think I could have come this far without them. Mind you, with the prospect of nine months on SS, soups and shakes alone would have been purgatory!
I think everyone has to do what they feel is right for them. Couldn't you try just one bar and see how you go? Believe me, they take ages to nibble through and you do feel full afterwards (I always have mine with a cup of coffee).
I only have the peanut and cranberry crunch bars now - they're heaven!!