As TechRadar’s resident robovac expert, follow my advice to find the right model for you.
https://www.techradar.com/home/vacuums/how-to-choose-a-robot-vacuum-heres-exactly-what-to-look-for
https://www.techradar.com/home/vacuums/how-to-choose-a-robot-vacuum-heres-exactly-what-to-look-for