Been using these for years. Depending on ride length, I choose with or without caffeine accordingly. They offer me quick energy when needed or wanting to push more miles. I do not get stomach upset from these. Easy to consume while riding too.
GU tastes good, replenishes what I need during a hard ride, and is easy to pack. The variety pack gives me options for flavors and caffeine levels. Other than being sticky as heck if you get it on your fingers I give it two thumbs up.
I use GU gels on every ride over two hours. I take one about 15 minutes before the start of the ride, and one every 45 minutes into the ride. I've tasted several flavors and they are all good,
GU gels have long been my favorite. The flavor is always spot on to the name, they dont separate during storage like some other gels and the packaging doesnt take up as much space your jersey pocket as some other gels. All wins in my book!