I've always liked fig bars but recently have tried and adopted SANS Meal Bars. They aren't cheap, but they always have discount promotions. Calorie-wise they are about equal to 2 standard convenience store Fig Newton packages, so they aren't that expensive compared to buying 2 Fig Neutron packages at convenience store prices, but still high compared to if you buy a box of FNs on sale at the grocery store.

There are various flavors but they all taste pretty similar to me. Energy-wise, they really seem to work better for me than Fig Neutrons or the other exercise bars - and much more natural ingredients plus they donate meal bars to needy areas.