One pro of Horizon's yogurt is that is has half the calories. However, because you are getting more nutrition out of the Siggi's Skyr with the lower sugars and higher protein, the calories are actually good calories. The higher protein count comes from the way Skyr is made. Skyr is strained through fat free milk THREE times, where other yogurts are only strained once. If you are a already a fan of yogurt, I really recommend substituting this yummy Icelandic treat! The higher protein count is worth it. It's thick and sour, but it only takes a couple of times to get used to it. And, I love pairing it with a Pink Lady or Lady Alice Apple to add some natural sweetness to it.