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GRAYL Geopress Purifier/Water Bottle
GSI Outdoors Microlite 720 Twist 24 Oz
See Top Ranked Backpacking Water Filters

GRAYL Geopress Purifier/Water Bottle vs GSI Outdoors Microlite 720 Twist

Analysis:

The GRAYL Geopress Purifier/Water Bottle is an example of a great Backpacking Water Filter at its $75 budget.

In the case of the $27 GSI Outdoors Microlite 720 Twist 24 Oz, however, we weren't able to find enough data to come to any reliable conclusions. If you're considering buying a Backpacking Water Filter in the $30 range, we encourage you to take a look at some other options.

Two highly trusted sources that perform well-thought-out in-depth testing consider the GRAYL Geopress Purifier/Water Bottle to be a great product - it earned the "Best Bottle Press Purifier" title from OutdoorGearLab and "Best filtered water bottle for outdoors" from CNET in their respective Backpacking Water Filter roundups, which is a good indication of it being a notable product.

As for the GSI Outdoors Microlite 720 Twist 24 Oz - OutdoorGearLab, a source that conducts reliable hands-on testing, has featured it in its Best Water Bottle of 2021 roundup. However, it didn't make it to any of the top spots.

We examined all of the review data that we could find and first took a look at sources that reviewed both of them, like OutdoorGearLab, and found that they haven't shown a preference for either product.

Then we checked which sources liked these two Backpacking Water Filters best and found that the GRAYL Geopress Purifier/Water Bottle got its highest, 9.4, review score from reviewers at houseandbeyond.org, whereas the GSI Outdoors Microlite 720 Twist 24 Oz earned its best score of 9 from OutdoorGearLab.

Comparison of expert ratings
Highly Recommended
Recommended
Mentioned
Not Mentioned
OutdoorGearLab
CNET
reviewgeek.com
sectionhiker.com
Switchback Travel
Gear Patrol
BestReviews
bustle.com
houseandbeyond.org
Tech. Specs Comparison
GRAYL Geopress Purifier/Water Bottle
$89
GSI Outdoors Microlite 720 Twist 24 Oz
$27
Backpacking Filter Type
Bottle
-
Capacity
24 (fluid oz)
24 (fluid oz)
Excellent expert review scores
Excellent expert review scores
9.0
Avg. Review Score
Score
Highly recommended by trusted experts
OutdoorGearLab
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Bottle Press Purifier
in “Best Backpacking Water Filter of 2021” 
Last updated: 22 Sep 2021
CNET
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best filtered water bottle for outdoors
in “Best reusable water bottles to give as gifts in 2021” 
Last updated: 1 Jan 2021
Switchback Travel
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Ranked #14 out of 18
in “Best Water Bottles for Hiking of 2021” 
Last updated: 14 May 2021
Gear Patrol
Trusted Source
-
Depth of
analysis
No
In-house
Testing
Mentioned
in “The Best Water Bottles of 2021” 
Last updated: 10 days ago
BestReviews
Depth of
analysis
Yes
In-house
Testing
Mentioned
in “Best Water Purifiers” 
Last updated: 4 days ago
BestReviews
Depth of
analysis
Yes
In-house
Testing
Mentioned
in “Best Water Purifiers” 
Last updated: 4 days ago
Recommended by trusted experts
OutdoorGearLab
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Rated 9.0 out of 10
in “Best Water Bottle of 2021” 
Last updated: 26 May 2021

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