These are 2 very popular contact lens brands, and there can be no clear winner declared, especially as contacts are an individual experience. Air Optix focuses on monthly lenses, including their class-leading NIght-and-Day product (30 days/nights of continuous wear), while Acuvue offers daily, 2-week, and 1-month options. There are differences in fit and material and how they go about promoting breathability and comfort. Your ECP can determine what's best for you based on your specific situation.