Too little sodium gives me nausea, intestinal distress, lightheadedness. Too little calcium and magnesium give me cramps. I like Zenergize Hydrate - lightly sweetened with stevia, but just enough to offset the acid of the citrus flavor, not nearly as sweet as HEED.

I prefer to drink my calories in the form of HEED on shorter, harder rides, but when I'm out for more than four hours or so I need protein, and if I'm sweating much I need a lot more electrolytes than HEED provides.