These are the best robot vacuums to buy on Black Friday

Update, Nov. 25, 2016: We noticed that the Robovac 10 has frequently been sold out on Amazon. The Robovac 11 cleans just as well as its predecessor, but has a longer battery life. Our overall favorite affordable robot vacuum is the Anker RoboVac 10. This model retails for only $199, it gets positive user reviews, and it did exceptionally well in our tests. In fact, it outperformed the popular iRobot Roomba 770 and 880, and was only barely beat by models from Dyson and Samsung that cost up to five times as much.