I use http://www.32gi.com/ So far it is the only thing that has helped me (I used to use goo's and energade but then I just got heartburn). Not that I am a long-distance rider. I am very small and have a high metabolism so have to eat constantly as well as drink the 32GI otherwise I bonk after an hour.... I have spoken to a couple of people about 32GI and so far only positive feedback. When you are next at a cycling expo eg. Argus chat to the salespeople and I'm sure they'll be able to contribute.
