with the sport beans - remember you have to eat an entire pack to get the amount of calories as a gel. It was always too much chewing for me, and I would never eat a full packet as a serving - which was fine for a half marathon, but I think that caused some nutritional issues for my first full. I've since switched to cliff shot blocks (3 of them = 1 gel) and hopefully that will help. If nothing else, I find them more time efficient than chewing all those beans. i wish i could use the gels since i think those are the best...but the consistency totally freaks me out.
Also keep in mind with the supplements if you are into organic/avoiding processed foods etc - cliff products are mostly organic/natural. I'm a very firm believer in quality of nutrients (not all calories are equal), so I think you'll get better energy from their products. It kills me to eat something so made in the lab...but I think cliff is the lesser of the evil.
But if you are on c25k, there's no need to worry about any of the foods (although it's always good to plan ahead!). I say for any run less than an hour, or even about 1.5 - skip the supplements and eat real food when you finish.