I have had and currently own 2 robots. My i7+ Is amazing. Works flawlessly. This on the other hand is terrible. It's their newest product and it definitely shows. They have replaced my brand new robot twice and all of them have the same issue or more. Right out of the box software bugs and error messages. Frustrating. I love iRobot but will exchange this item for the i7+. This one isn't ready for prime time!