You might be interested in this chart that compares several sports drinks:
http://www.medioncorp.com/hm/eload/eProductChart1.htm#_

Just my opinion: I love the Cytomax punch flavor. It has amino acids, but no protien, so no nasty protien taste. And it has no aspertame. It's pretty sweet, but not as sweet as Gatorade and definately paletable on long rides.