I've done business with CBS for more than a decade.  I recommend them to everyone I know.  Their attention to customer service is unparallelled.  I've found CBS' installation to stand up to its advertising.  Neither my daughter, nor I, have had a drop of water in our basements since our installations.  That says a lot, as our neighborhood has had several experiences with very heavy rains and numerous basements took on water.                        
                        
                            Elizabeth C. of Rochester, MN