Roborock S8 Pro Ultra vs Roomba j7+ vs Dreame L10s Ultra vs cheaper models: Obstacle avoidance is the key difference

The [Roborock S](https://www.amazon.com/s?k=Roborock+S&tag=wehavethat-20)8 Pro Ultra, [Roomba j](https://www.amazon.com/s?k=Roomba+j&tag=wehavethat-20)7+, and Dreame L10s Ultra can see and avoid cords, shoes, and pet toys. Cheaper ones like the Roomba 675 and Eufy 11S just barrel through — meaning you have to clear the floor first.