Final thoughts: Which one is better? Both robovacs are good featured and have similar functions. In our opinion, second generation Xiaomi Roborock is a better choice with the twice lower price, you can buy a robot vacuum that has more features than more expensive devices. It's equipped with new technologies, it costs less, has more powerful suction, longer working time, works quiet, has a washable filter, covers more when cleaning and can sweep and mop at the same time. But if you want more trusted and proven brand or you want to control the robot by Amazon Alexa — Roomba iRobot 980 is your choice.