The i3 or i4 series is the sweet spot—they have smart mapping, row-by-row cleaning, and stronger suction. Avoid the Essential line if you have a golden retriever, as it lacks object avoidance and will eat charging cables.What’s the difference between the i3 and i4 Roombas?

The i4 has a larger battery, so it can clean more of a big house on a single charge. Otherwise, they have the same smart navigation and suction.

Report 008087. Filed.