The little sample sizes are so perfect for me. They are small enough that I don't get too full, but they are big enough to provide a satisfying snack! Kim introduced them to me at the gym a long time ago, and I've been a fan ever since. If I buy the full size bars, I usually only eat half of one at a time. I honestly think they are the best protein bars I've tried so far. And they DIDN'T pay me to say that :)
Definitely try them if you get a chance. They usually sell them in places like the Vitamin Shoppe and maybe your gym.