How many Roomba models are there and which one should I buy?

There are about 47 model numbers, but they fall into three categories: budget (600/700/900 series, i1), sweet spot (i3+/i4+, j7+), and overkill (s9+, j9+, Combo j9+). For most homes with kids and pets, the sweet spot models like the i3+ or j7+ are best.What’s the difference between random navigation and smart mapping

Report 007041. Filed.