iRobot Roomba Combo j9+ vs. iRobot Roomba Combo Essential: Which is better for you?

iRobot Roomba Combo Robot Vacuum & Mop (Y0110) - Easy to use, Power-Lifting Suction, Vacuums and mops, Multi-Surface Cleaning, Smart Navigation Cleans in Neat Rows, Self-Charging, Alexa

iRobot Roomba Combo j7+ Self-Emptying Robot Vacuum & Mop - Automatically Vacuums and Mops, Fully Retractable Mop pad, Identifies & Avoids Obstacles, Smart Mapping, Works with Alexa, Ideal for Pets

Robot Hút Bụi Thông Minh iRobot Roomba 890