So on Twitter last Friday I asked everyone - What is your favorite Gel to have during a long Run, Bike, or even a swim?? I then let people know which one I prefer.
I hope this helps you if you are on the fence or still dont know which gel is best for you. Side note- there is a pic below of what a Gel looks like for those who dont know what it is -but it basically is a quick 90-100 calorie "meal" on the go that a body might need to prevent the "wall" from happening during a workout.
Gu Roctane Gels
A couple people liked Clif Shot Bloks which are definitely a good substitute with gels, but my personal preference is to have those on the bike and during a swim workout. Not during a run.
I hope this helps. If you have a twitter account- the answers above were from people on twitter who will FOLLOW YOU BACK so FOLLOW THEM! :)