I had heard about it, but because of my previous lifestyle (cheaper food is better, even if it's slowly destroying your body) and the cost of the brand I've never tried it before.
Disclosure: I've learned that it actually doesn't cost much more to eat healthily as long as you get the most bang for your buck. I only purchase the amount of produce that me/my family can physically eat in one week, or else it will likely go bad in the fridge. That's why I pick up about $40 worth of groceries between paydays. I've also been buying produce that is mostly in season, and shopping around for weekly sales on staple items I normally buy.
My mom introduced me to her favorite Kashi granola bar when we got onto the topic of finding healthy, lower calorie snacks that "resemble" chocolate bars for your sweet tooth fix. It's called Dark Chocolate Coconut and she swears it's so good she looks forward to her 3pm snack every day, and this little granola bar will hold her until supper.
I didn't actually get the opportunity to try her favorite flavor because she had just purchased the Pumpkin Pecan, and the Raspberry Chocolate flavors, so we cut one of each in half and shared them to taste test. They were both great! In my opinion, the Pumpkin Pecan is more of a granola bar snack (as in, it wouldn't satisfy my need for a chocolate bar), but the Raspberry Chocolate flavor really hit the spot!
From what I've tasted of Kashi, I give the brand two thumbs up. I may have to spend some more time on their website learning about the products but, looks like I might get some cereal whilst grocery shopping tomorrow!