"Brilliant"
I dithered over buying one of these as it did seem hard to justify the price for my relatively small house, but having had it a couple of weeks now I really do think it is worth its weight in gold. I can set Robbie going, and then do something much more interesting than vacuuming. He does a great job, is relatively quiet, picks up a surprising amount, is easy to empty, doesn't fall down stairs, and even does a self satisfied little fanfare when he finishes and returns to his charging station. Only gripe would be for the cost the batteries for the 'virtual wall' should have been included.