It makes sense comparing Shark ION ROBOT 750 vs iRobot Roomba S9 because they both are able to give some premium features. Based on our rating, ION ROBOT 750 has the overall rating of 7 out of 10 versus 9 for Roomba S9.
Advantages Shark ION ROBOT 750 over iRobot Roomba S9
Lower noise level, 60 dB vs 70 dB
Two side brushes
Advantages iRobot Roomba S9 over Shark ION ROBOT 750
Larger dust bin capacity, 400 ml vs 380 ml
A Virtual Wall creates an invisible barrier that Roomba S9 won't cross
Roomba S9 has mapping function that can map your area and uses smart path planning to clean more efficient
Single room mode to remove dirt in one room
When you want to give your area an intense clean, intensive mode will increase suction power
Better battery capacity, 3300 mAH vs 2600 mAH
Better battery life, 120 min vs 90 min
Common features and specifications
Both robot vacuums are Wi-Fi enabled
Dry cleaning mode
A noticeable difference between two models is the size, which is 32 x 6.6/12.6 x 2.6 (D x H) cm/inches for the ION ROBOT 750 and 30.9 x 8.8/12.2 x 3.5 (D x H) cm/inches for the Roomba S9. The weight of the ION ROBOT 750 is 2.4/5.5 kg/lbs, and for the Roomba S9 it is 3.6/8.1 kg/lbs.