though both manufacturers have a broad product range in various segments from single-aisle to wide-body, their aircraft do not always compete head-to-head. instead they respond with models slightly smaller or bigger than the other in order to plug any holes in demand and achieve a better edge. the a380, for example, is designed to be larger than the 747. the a350xwb competes with the high end of the 787 and the low end of the 777. the a320 is bigger than the 737-700 but smaller than the 737–800. the a321 is bigger than the 737–900 but smaller than the previous 757-200. airlines see this as a benefit since they get a more complete product range, from 100 seats to 500 seats, than if both companies offered identical aircraft.