I'm doing Body for Life and have been testing the many bars they have at Wal-Mart. To best fit the "diet" I am on, I look for bars that are pretty equal in protein and carbs. I only like the crunchy bars - the chewy bars do not taste good to me at all! The brands I like most are the Colossal cookies and cream (something like that), the EAS Myoplex Lite Chocolate Chocolate Chip crisp, and I also like the Marathon Snickers energy bars.
ETA: You can find these in the vitamin section close to the pharmacy