I'll say that I feel like I have more endurance when I am drinking this stuff vs Gatorade. I also haven't gotten muscle soreness the next couple days after a hard workout like I used to sometimes. So I'll be buying Accelerade again.
But whatever you do, try the flavors first. Lemon-lime is very bad tasting. May daughter called it "yucky lemonade" and a friend of mine said it "tastes like the inside of a climbing shoe smells".
I've also found it doesn't mix that well. My trick is to fill the water about 2/3 of the way up and add the power to that so it doesn't stick to the sides of the container as much. Then fill the water the rest of the way up and shake it. If you are making it farther in advance use hot water so it dissolves better and throw it in the fridge.