In short: After 2 months now I can answer all the points positive
He makes cleaner than clean. Better than Besenrein. Our soil (mainly tiles and laminate) is as clean as if it had been wiped. In the morning we feed him with the remaining bread crumbs from the breakfast table.
The battery power is enough. Even the large living room with 40sqm, with carpet, dining table and 6 chairs, couches, palm trees, he creates in 1 to 1.5 hours.
To the chairs he navigated precisely, table legs, Bench, flowers are not a problem. Also among the sofas where you otherwise rarely get there with a broom or squeegee it cleans. A Dream! Thoroughly and really in almost every corner.
Meanwhile, I use it two storeys (ground and first floor) in different rooms. Stand up, turn and finish.
Two things to which you should pay attention:
Items necessarily put away! small rugs he pulls through the room, he even turned over a leaned against the wall board! Cable he pulls like to himself, but can rid almost always.
Clean regularly. Depending on the application every 1-2 days to empty the dust container and once carefully clean up the week with the supplied tool and damp cloth.
If anyone has questions about the Roomba, he can feel free to contact me.
Despite my skepticism at the beginning of a great success.