The document compares the Neato XV-11 robotic vacuum cleaner to the Roomba 780. Both use infrared and acoustic sensors to navigate rooms and focus on dirty areas. The Neato XV-11 costs less but has a larger dust bin and precise back-and-forth cleaning motion, while the Roomba 780 navigates between rooms and leaves air cleaner using its iAdapt system. Both clean effectively with a single charge but have different navigation and control features.