Before that, I had 2 iRobots for $300 each. This robot for $100 is no worse, although it works on a different principle: iRobot is an electric broom, this one is an ordinary normal vacuum cleaner. At the same time, the quality of cleaning is the same. iRobot, due to the design features (constantly working brushes raking in debris) had an additional. motor for torsion of brushes + hair and other things were constantly wound on this brush, and it also worked less on a single charge, although it had a larger battery . This robot is technically simpler, there are no brushes on which debris would be wound, it walks longer and works quieter! You can be next to him working, watch TV and normally.