I usually pack home made granola bars with not much sugar but a lot of fruits and nuts packed in it to keep it interesting. Variety helps. I stay away from processed bars because of the corn syrup. It's just as bad I read up somewhere.

I usually focus on the grain-type carbs than anything else since they break down into more sugar in my system and I don't need that.

Aren't carbs the staple of most diets? Of course the right amount of carbs sort of diet, not the empty/sugary sorts. That defeats the purpose doesn't it?