we research a lot of vacuum and find that this one be the best value for the price . with cheap , bagged vacuum you always have to replace the bag , and they fill up really fast . just a waste . we look at Rainbow vacuum and sure it use cool technology to remove absolutely every spec of dust , but they cost a fortune . this vacuum have several filter that you have to clean every now and then , but it operate very simply and do not lose it be suction power . we have have ours for 2 or 3 year now and we love it !