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Steelseries Rival 310 (2017) vs Razer DeathAdder Essential Left-Handed Edition (2013)
Razer DeathAdder Essential Left-Handed Edition (2013)

The Steelseries Rival 310 (2017) makes for a good, if unremarkable, Gaming Mouse for people with a $70 budget.
The Razer DeathAdder Essential Left-Handed Edition (2013), however, is merely mediocre at its $249 asking price, when compared to similarly priced products, and won't satisfy the needs of most people.
In either case, we suggest that you first take a look at some other options at the $70 and $100 price points before committing to one of these - it's likely that you'll be able to find some better alternatives.
If you're still interested in learning more about the Steelseries Rival 310 (2017) and Razer DeathAdder Essential Left-Handed Edition (2013), however, we wrote a summary of what we could find about them:
Windows Central, a review site with a history of doing objective hands-on testing, has great things to say about the Steelseries Rival 310 (2017). In fact, it's "Top Pick" in its "Best Gaming Mice for Big Hands in 2021" roundup, which points toward it being a good Gaming Mouse.
As for the Razer DeathAdder Essential Left-Handed Edition (2013) - CNET, a source that conducts reliable hands-on testing, has featured it in its Razer DeathAdder Left Hand Edition review roundup. However, it didn't make it to any of the top spots.
We couldn't find any sources that tested both of these Gaming Mice, 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 Steelseries Rival 310 (2017) got its highest, 10, rating from Techradar, while the Razer DeathAdder Essential Left-Handed Edition (2013) earned its best, 7.5, score from CNET.
Lastly, we averaged out all of their review ratings and observed that the Steelseries Rival 310 (2017), with its 8.1 average, performed considerably better than most Gaming Mice - the mean score for the product category being 7.5 out of 10 - while the Razer DeathAdder Essential Left-Handed Edition (2013) managed an average of 7.5.
There's one caveat here - it might not be entirely justifiable to do a direct Steelseries Rival 310 (2017) vs. Razer DeathAdder Essential Left-Handed Edition (2013) review average comparison since they aren't priced the same and more expensive products tend to get higher review scores from some sources.
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