Product Playoffs pitted the two sparkling mineral waters against each other in a head to head competition with categories including price, ingredients, sourcing and taste. Differences in most categories were negligible, but when it came to taste it was San Pellegrino that ultimately won over the test group.

In an admittedly less scientific taste test from Los Angeles Magazine dubbed "We Ranked the Top 11 Brands of Bubble Water, Just Because," Perrier faired slightly better coming in at number four on the list: "A classic that lives up to the title. Neutral, crisp flavor, big fizz, and a French name that's easy to pronounce鈥攚hat's not to love?" San Pellegrino didn't fare nearly as well. "Despite being on literally every restaurant menu in the history of restaurants, no one was impressed. San Pellegrino received the most mediocre scores of all. We'll still probably end up ordering it at restaurants, though, because what other choice do we have?"

And when Food52 put multiple mineral waters side to side for tasting, for tasters, both Perrier and San Pellegrino came in lacking on the carbonation front.

The jury might remain undecided on which sparkling mineral water reigns supreme, but San Pellegrino might just take the lead with this glowing review from sommelier Sabato Sagaria for Food and Wine: "Great balance of minerality and bubbles." Another nod to the waters of San Pellegrino, they were once sampled by non other than Leonardo Da Vinci.