For long runs I use supplements/fuels that are designed for endurance performance. My personal favorites are the Hammer products, but there are other lines on the market that are good, too. I did an 18 mile run this morning, and had 2 GUs, 1/2 Hammer Nutrition Bar, 2 Endurolytes (electrolytes), and sipped on Perpetuem.
The energy drinks you described are not made to sustain you for exercise purposes. They are made to provide a caffeine hit.
"God gave you your body as a gift, so you should take care of it." - My Mom