Good balance of utility and cost
I picked this up when it went on sale for $150, and so far, it's been worth it. The dust bin is relatively tiny, and the vacuum isn't powerful to pick up big pieces of anything, but it gets the dog and cat hair from under the couches -- which is really what I bought it for.
One issue I have with it: when it hits a carpet or other change in floor depth, it will leave small piles of debris that it's been pulling around with it that it's not powerful enough to suck into the bin.
The kids love it, and have named it 'Chester' for no reason. I let them put dirt on their train table and put Chester to work. They love watching him roll around and respond to their pushing on the bump sensor. In terms of teaching kids basic robotics, it's great.
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