I use Heed for any ride over an hour. I mix 2 scoops into a water bottle. It has very little taste, which I like. I can't drink Gatorade or anything like that.

I have used Perpetuem a couple times, but it can be tricky to mix and doesn't have a long "bottle life" after you mix it. Since I always mix my drinks the night before a ride, I just stick with Heed.

I use Hammer Gel every 45 minutes or so when riding hard, and about every 1-1.5 hours when just riding easy.

You may want to go to www.hammernutrition.com and click on Knowledge>Optimum Usage. That will tell you their recommended usage.