Star MKII is better than other supplement brands as it provides a 100 percent, no-question money-back guarantee. Other brands don’t offer this money-back thing, and it makes you lose money if their product does not work. Star MKII is from a reputed brand, Juiced Upp, and is naturally made from properly sourced ingredients that have been backed by research. Other brands do not disclose any information about the ingredients they add and make you wonder what has been added to it.