Rainbow is an outstanding product. I purchased mine in August of 2007 and it still runs today the same as it did on day one. I purchased the machine mainly due to my allergies – total difference in quality of life. I am always complimented on how clean my home is and it really takes no effort due to the Rainbow system. Ray, the local dealer, has been dropped in to look at and service the machine over the years on several occasions. Good guy to work with. Thanks!