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Cosori Original Air Fryer 5.8 Qt (CO1XX-AF) vs Ninja Foodi FD400 Series (2019)
Cosori Original Air Fryer 5.8 Qt (CO158-AF)

The Cosori Original Air Fryer 5.8 Qt (CO158-AF) was well-received by reviewers at Serious Eats, a trustworthy source that performs unbiased hands-on testing. It did great in their "We Tested 11 Air Fryers (and Cooked 30 Pounds of Potatoes) to Find the Best" roundup - they named it their "Ranked 2 out of 4", which, by itself, suggests that it's a noteworthy product.
As for the Ninja Foodi FD401 (2019) analysis - it impressed reviewers at Good Housekeeping, a source that's known for its objective testing and well-thought-out methodology - it performed great in its "5 Small Kitchen Appliances That Will Change Your Life" roundup and earned the "BEST AIR FRYER COMBO" title.
We couldn't find any sources that tested both of these Air Fryers, so we only analyzed how they performed in reviews from different sites.
We first examined which sources rated each of these best and found that the Cosori Original Air Fryer 5.8 Qt (CO158-AF) got its highest, 9.6, rating from techaeris.com, while the Ninja Foodi FD401 (2019) earned its best, 9, score from TechGearLab.
Lastly, we averaged out all of the reviews scores that we could find on these two products and compared them to other Air Fryers on the market. We learned that both of them performed far better than most of their competitors - the overall review average earned by Air Fryers being 6.8 out of 10, whereas the Cosori Original Air Fryer 5.8 Qt (CO158-AF) and Ninja Foodi FD401 (2019) managed averages of 9.2 and 9.0 points, respectively.
Due to the difference in their prices, however, it's important to keep in mind that a direct Cosori Original Air Fryer 5.8 Qt (CO158-AF) vs. Ninja Foodi FD401 (2019) comparison might not be entirely fair - some sources don't take value for money into account when assigning their scores and therefore have a tendency to rate more premium products better.
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