Except for Kashi and LUNA, I've never heard of the rest. Maybe that's because I stick with the bars I like such as Kashi GOLEAN! Roll Bars and Balance Bars (especially the peanut butter ones - yum!)
Lately, I've fallen in dieting love with the the Kashi GOLEAN! bars because they're impervious to the summer heat and don't get smooshed in your purse. It's a little embarassing to lick a melted Balance bar off it's wrapper in public, don't you think?
UPDATE: Raising the Bar, Pt. 2 has been posted.
Do you have a favorite nutrition bar? Or do you think they're gross and a big waste of money?