Bests & Worsts Reviews from Amazon

I don't drink this myself, I buy it for my dad who I swear would drink it by the gallon if offered. He is diabetic and we have been trying to get him off of diet soda for a long time, this is better for him. I have no complaints about the product, I do wish amazon would do a better job keeping this flavor in stock, this is his favorite flavor and nearly impossible to find. I want to do a subscribe and save on it, hopefully amazon can get that going.