Compare iRobot - Roomba® i3 (3150) Wi-Fi® Connected Robot Vacuum - Neutral Price in the USA - CompareFeed
iRobot Roomba i7 ou iRobot Roomba 980 ? Comparaison et Différence
Costco shows an i4 robot to compare with the i7+ on its site. The link to the actual listing for the i4 does not work though. It appears that the i4 somehow