iRobot Roomba 671 Wi-Fi Robot Vacuum

iRobot Roomba 671 Wi-Fi Robot Vacuum

Good price is tempting, as I need a Roomba yesterday. But I’m leaning toward the 900. Is it really that much better? I need it to do the entire downstairs floor, a good 1800 sqft.

is this a new one or used?

New.

wow, pretty good for new - need to compare