I posted, Any young clydes out there?, twice and can't figure out how to delete this one. So, I'll make an accelerade plug.
I really like accelerade. Last year I went through a medium sized tub of orange. I used half the amount that the package said to (to conserve it and to avoid intaking too many carbs during a ride). I would recommend it to anyone who takes longer than 20 mile rides. It's like a breath of fresh air to my legs to take a couple big swigs as I start to tire. I carry two bottles (probably 20 oz, I'm not sure). I usually drink 1 and a half on the road and finish the other when I get back from my ride.