I am so happy with my new Roomba j9+! I have an old robot vacuum and am annoyed i constantly have to empty it. This new self emptying Roomba is a game changer! I turn it in through the app while I'm at work and it vacuums my entire first floor itself without me emptying it. The battery lasts for long. The vacuum is very smart at drawing maps and navigating through the house. Mopping feature is another great add on. I have two dogs and have to vacuum daily. I just can't express enough how having this new Roomba changed my housework. So easy to use!