Gregory Mountain Endo Hydration Backpack vs Gregory Mountain Nano Everyday Outdoor Backpack

The Gregory Mountain Endo 15 Hydration Backpack is a great Hydration Backpack for its $129 asking price.

The Gregory Mountain Nano 18 Everyday Outdoor Backpack, however, while a reasonable product for $49, doesn't stack up against its competitors quite as well. If you're considering Hydration Backpacks in the $55 range, you might want to check out some better options.

The Gregory Mountain Endo 15 Hydration Backpack was loved by reviewers at OutdoorGearLab, a highly trusted source that performs reliable in-depth testing. It did great in its "Best Hydration Pack" roundup where it was named its "Best Storage and Organization", which, in itself, makes it a product worth considering.

As for the Gregory Mountain Nano 18 Everyday Outdoor Backpack, it was really well-received by reviewers at OutdoorGearLab, a reliable source that's known for conducting its own, high-quality, in-depth testing. It performed great in its "Best Hydration Pack" roundup and was named its "Best Bang for Your Buck", which, on its own, makes it a product that warrants a closer look.

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 Hydration Backpacks best and found that the Gregory Mountain Endo 15 Hydration Backpack got its highest, 9, review score from reviewers at OutdoorGearLab, whereas the Gregory Mountain Nano 18 Everyday Outdoor Backpack earned its best score of 9 from OutdoorGearLab.