Difference between Zerex Additives?

Hi, I have decided to use a Zerex product in my loop but I am not sure which one. Upon going to the official website, I saw two different products and then going to modding stores, I saw another product that I couldn't even find on the Zerex site so I'm pretty clueless as to which one works the best. My plan for the loop is Distilled Water, one of the zerex products, and 2 or 3 capfuls of the highest strength rubbing alcohol to kill any sort of growth. Plus dyes of course. Here are links to the three products but I am just curious as to which product you guys recommend.
Product #1:
Zerex Racing Super Coolant
Product #2:
Antifreeze/Coolant
Product #3:
Ready To Use Antifreeze/Coolant
Ok thanks a lot.