I was not expecting the results. Diet Coke fans say Aldi's store-brand diet cola is even better than the original. At less than $5 for a 12-pack, the generic diet cola is cheaper than Diet Coke.

As a frequent ALDI shopper, I’ve tried many of their exclusive store-brand products. Many ALDI finds are now staples in my kitchen, like the Park Street Deli Egg Rolls and Simply Nature Pasta ...