I do think the combo of caffeine and sugar is the reason why I don't do well with chocolate. I try to avoid sugar also, but sometimes I crave a little something sweet. Still looking for that good honey recipe.
I generally find for me it a sugar level rather than what types of sugars. If I am eating too much sugar at some point I will start to exhibit signs of a flare. Although chocolate always seems to give me problems faster but that may be the dairy combo. If I eat sugar in moderation I am ok. Gummi bears seem harmless but they actually have a bit of sugar in them you would be suprised how much.