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This product has a FreakScore of 8.2 out of 10 based on 244 scores.
The navigation system is inferior to Neato's XV11 which is only a vacuum but the 390 spends way too much time fighting the walls, does not hug the walls. Gets stuck way too many times and my house is Robot friendly. The robot passes through the virtual wall and iRobotics has sent me 2 new ones. The robot goes past the new ones also. The robot would be much much more efficient if the navigation system was comparable to Neato's.