I love this little robot so much. Ive owned probably 8 robot vacuums over the years and this one is my favorite. It fits under the couches so handy and only has one spot it likes to get stuck so I just prop something in front to stop that. Most robot vacuums get stuck in a few spots. This one is good at extricating itself from tight areas and doesnt freak out about metallic reflections which bother a lot of the others. Its not smart so it doesnt map a room and does tend to wander around randomly but its battery is so good that it just keeps going and going and eventually gets everything. Its easy to clean has a big enough capacity and gets itself home when its done.