We had high hope for this Roomba. Unfortunately, the hype appears larger than the results/actions of this product. s9 series has software and hardware issues. The first Roomba had to be exchanged for hardware issue with the lid. The replacement was not communicating very well with the base, and now we are having to exchange the base due to a software glitch. Sigh.... Everyone we speak with are ready to help and want to resolve the issues, yet they cannot help with faulty product. Only exchange. We're being calm, but also ready to request a refund if this second exchange does not work.