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Logitech G413 (2017) vs Cougar Attack X3 (2016)
Logitech G413 Carbon (2017)

The Logitech G413 Carbon (2017) is a relatively good Mechanical Keyboard for people that are willing to spend around $40. The Cougar Attack X3 (2016), by contrast, is quite unremarkable and doesn't stand out in any meaningful way from other products at this price point.
In both cases, however, we recommend that you take look at some other options at the $40 and $100 budget ranges; in all likelihood you'll find some better alternatives.
If you're still interested in learning more about the Logitech G413 Carbon (2017) and Cougar Attack X3 (2016), however, we wrote a summary of what we know about them:
While the Logitech G413 Carbon (2017) wasn't able to make it to the very top of any roundups from sources that perform quality hands-on testing, it still got featured in a large number of them. Techradar, TechSpot, Tom's Guide, PCmag, Reviewed, and CNET have all deemed it worthy of a place on their respective shortlists.
Taking a look at the Cougar Attack X3 (2016), it got featured in roundups from two reliable sources that conduct their own testing - PCWorld and PC Gamer - but it fell short of earning a top spot in either.
We couldn't find any sources that tested both of these Mechanical Keyboards, 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 Logitech G413 Carbon (2017) got its highest, 9, rating from Techradar, while the Cougar Attack X3 (2016) earned its best, 8, score from PCWorld.
Lastly, we averaged out all of the reviews scores that we could find on these two products and compared them to other Mechanical Keyboards on the market. We learned that both of them performed far better than most of their competitors - the overall review average earned by Mechanical Keyboards being 7.4 out of 10, whereas the Logitech G413 Carbon (2017) and Cougar Attack X3 (2016) managed averages of 8.3 and 8.0 points, respectively.
Due to the difference in their prices, however, it's important to keep in mind that a direct Logitech G413 Carbon (2017) vs. Cougar Attack X3 (2016) 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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