This thread got me thinking and I did some online label reading. I was surprised to find that the Gatorade products have such a small amount of electrolytes. Same thing for the Hammer tablets, but it has a high amount of Vitamin B-6. The Emergenc-C product seems to be the only thing with any reasonable amount of Potassium.

In contrast, here are some regular foods and their potassium levels. Some examples are:
cup of OJ: 496 mg
banana, 1 cup: 596 mg
1 cup of cantaloupe: 494 mg
1 cup of raisins: 1089 mg

Hammer Endurolytes tablets (dosage is anywhere from 1 - 6 per hour):
Sodium (as Sodium Chloride) 40mg 2%
Chloride (as Sodium Chloride) 60mg 2%
Calcium (as Chelate) 50mg 5%
Magnesium (as Chelate) 25mg 6%
Potassium (as Chelate) 25mg 1%
Vitamin B-6 (as Pyridoxine HCL) 6.6mg 330%
Manganese (as Chelate) 1.6mg 80%

Gatorade products, per 8 ounces:
110-140 mg of sodium 3%
30-45 mg of Potassium, 2%

Emergenc-C:
Magnesium 120 mg, 30%
Potassium 408 mg, 12%

I guess I'll skip the fancy products for now on and just stick to mother nature. Even on a long ride, seems like it might be better to just grab an OJ at 7-11 instead of Gatorade.