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Marshall Stanmore II Voice (2018) vs Anker Soundcore Motion (2019)
Marshall Stanmore II Voice (2018)

The Marshall Stanmore II Voice (2018) and Anker Soundcore Motion+ (2019) make for good, if unremarkable, Portable Bluetooth Speakers at their respective budgets.
With that said, while they both should serve reasonably well, you might want to look into other options at the $300 and $80 price points - it's likely that there are some better alternatives available.
If you want to learn more about the Marshall Stanmore II Voice (2018) and the Anker Soundcore Motion+ (2019), however, we prepared a summary of the information that we have:
Two highly trusted sources that perform well-thought-out in-depth testing consider the Marshall Stanmore II Voice (2018) to be a great product - it earned the "Also great" title from Wirecutter (NYTimes) and "Best sound" from SoundGuys in their respective Portable Bluetooth Speaker roundups, which is a good indication of it being a notable product.
Returning to the Anker Soundcore Motion+ (2019), SoundGuys, a source that's known for its high-quality in-depth testing, has great things to say about it. In fact, it was named its "Best Bass" in its "Best Bluetooth speakers under $100" roundup, which is quite a feat.
We analyzed all of the review data that we could find on these two Portable Bluetooth Speakers. First, we examined sources that tested and scored both of these products - Techradar favored the Anker Soundcore Motion+ (2019) over the Marshall Stanmore II Voice (2018), whereas reviewers at TechHive haven't shown a preference for either.
Then we took a look at which sources liked them the most - we found that the Marshall Stanmore II Voice (2018) was best received by Top Ten Reviews - it gave it a score of 9, whereas the Anker Soundcore Motion+ (2019) got its highest score of 8 from reviewers at Techradar.
Lastly, we averaged out all of their review ratings and observed that the Marshall Stanmore II Voice (2018), with its 8.0 average, performed considerably better than most Portable Bluetooth Speakers - the mean score for the product category being 7.6 out of 10 - while the Anker Soundcore Motion+ (2019) managed an average of 7.5.
There's one caveat here - it might not be entirely justifiable to do a direct Marshall Stanmore II Voice (2018) vs. Anker Soundcore Motion+ (2019) 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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