Yes the Shark has different levels as well, we really don't need the top level with no dog in the house.

There is a reason driverless hockey rink ice resurfacers are only in testing phase.

Even though a rink is a flat surface and the corners are rounded, the variables of ice temperature, moisture, issues with the blade scraper, snow buildup, and other problems have kept the idea shelved.

If you can't get a driverless rink resurfacer off the blueprints onto the ice, how can you expect a Roomba to perfectly vacuum a house with dozens of obstacles?

well, because my floors aren't made of ice

OK my wife absolutely loves the thing.
I've ordered a second for downstairs now.

It sucks up anything Cici and Willow can throw at it.

My first robot vaccum many years ago wasn't very good.

However, about 5 years ago I picked up an EcoVac from Costco thinking that I'd return it if it didn't work well. While it had some issues, it worked much better than I was expecting. It ran every day with a little maintenance but after 5 years the performance was starting to degrade.

I purchased another, this time with a roller mop on it and it does a great job on our LVP flooring (took a little tinkering with the water adjustment). Keeps up with hair from our 2 labs and it's very quiet.