In cases like that (where they also span across brands) I usually check out which single one Costco sells or what something like Wirecutter recommends as the "b

In cases like that (where they also span across brands) I usually check out which single one Costco sells or what something like Wirecutter recommends as the "base." My specific needs may vary, but it's a start. If you can afford it and are willing to spend the money, the robot vacuum and handheld combination @malandrew mentioned is a pairing that has worked for our house for the past few years now.