As far as robot vacuums go, the Roomba 980 is excellent. It cleans fairly thoroughly, looks great, doesn't make too much noise, and is super-simple to use. Suction or sense of direction might not quite match Dyson's all-seeing 360 Eye, but it comes very close.
Excellent app; Surprising suction; Not afraid of cliffs - or more likely; stairs
Can't cut into corners; Shaken up by shag pile rugs