As mentioned above, we like the Shark AI Ultra a lot here at Engadget [...] That means you won't need to spend extra money on the AI Ultra over time.
As for the 2-in-1 model, its water-and-solution based cleaning abilities are basic, but beat having to bring out an old-school mop and bucket. In our testing, the AI Ultra Ultra 2-in-1 left our hardwood and tile floors noticeably cleaner. As I said, both models are great options, particularly when they're as affordable as they are right now.
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