Beginning in June 2010, Ironman branded events started using Ironman Perform Sports Drink in place of Gatorade at the Bike and Run aid stations.
I read so many bad reviews of the drink in Ironman Louisville race reports that I thought I better give it a try on some of my long workouts to make sure I wouldn't have any problem with it at Ironman Arizona.
I'm happy to say that after two weeks of using Ironman Perform, I haven't had any negative issues with the drink on the bike or during my long runs. It's a little bit too sweet for my taste, but I also think Gatorade is a little too sweet, so honestly I didn't find much difference between the products.
I still prefer my Heed/CarboPro mix, so I'll start the bike fully loaded with Heed/CarboPro. But I'm glad to know I won't have any issues with the new Ironman drink when my pre-mix runs out.