Just avoid the drinks with high-fructose corn syrup... Regardless of the positive spin the Corn Refiner's association tries to put on it, it's NOT natural and NOT healthy...

I'm diabetic, so I get the Powerade Zero - no sugars... I mix mine 1/2 and 1/2 with water when doing long, hot rides (anything more than 3 hours of sweating) and that's all I drink is the 50/50 mix.

I also like bananas when riding - but I have to have no more than 1/2 at a time or my blood glucose spikes quite high, even when cycling. Having little-to-no insulin isn't a great thing when you're a foodie =)