A:Answer Close the doors to all the other places, purchase digital walls from iRobot, or buy a higher end model (i6, i7, or i9). I think iRobot is taking advantage of us: the i7 cleans about the same as the i3, but you can program it much better (room by room). As the difference is mostly software, I would have thought the prices would be closer. We use the i3 around the bedrooms where the door trick works, and downstairs the i7 so I can tell it to clean the kitchen or dining room after dinner.
