Roomba 580

My (just under year old) iRobot Roomba 560 went back for repairs a couple of months ago due to a failed gearbox.  It was fixed but came back not quite right.  So - off it went to Germany again for investigation.  This time it didn't return - instead, in its place, iRobot sent me a top-of-the-range 580 :)  I was sooo happy :)