We have never used a Robot Vacuum before and we love the Shark Robot Vacuum Cleaner. It does a wonderful job. It runs before we get up in the morning and it's so nice to wake up to clean floors! It was very easy to download the program to set up the schedule. It's also very quiet! I was surprised at how well it goes over cords and throw rug. I am so impressed and love the help around the house! I will highly recommend this product to everyone I know! This Robot Vacuum is a keeper!