^^^ +1 to what Tom said. Most of the MTB racers in the area here are using Heed, and I keep hearing good things about it. I'm finishing off the Gatorade mix that I have left, and won't be getting any more after that.
Also.. fifthcircle.. were you on the MUP in Lincoln this AM? While I was babying my rear wheel the final several miles this AM, I saw a guy on a Orange looking Lemond with a camelback in front of me. My riding partner got in a informal little race with that person, he was riding a celeste Bianchi roadie, this was on the MUP that parallels highway 2 between 27th and 48th streets.