The iRobot Roomba 880 vs iRobot Roomba 671 comparison shows that these robot vacuums have some important differences and common features. Based on our rating, Roomba 880 has the overall rating of 6.2 out of 10 versus 6.7 for Roomba 671.
A noticeable difference between two models is the size, which is 35.3 x 9.1/13.9 x 3.6 (D x H) cm/inches for the Roomba 880 and 34 x 8.8/13.4 x 3.5 (D x H) cm/inches for the Roomba 671. The weight of the Roomba 880 is 3.8/8.4 kg/lbs, and for the Roomba 671 it is 2.2/5 kg/lbs.
The iRobot Roomba 671 is better robot vacuum in this comparison. Check iRobot Roomba 671 price