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Black Diamond Cosmo vs Black Diamond Iota
The Black Diamond Cosmo makes for a good, if unremarkable, Headlamp for people with a $45 budget.
The Black Diamond Iota, however, is merely mediocre at its $28 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 $45 and $19 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 Black Diamond Cosmo and Black Diamond Iota, however, we wrote a summary of what we could find about them:
The reviewers at OutdoorGearLab have featured the Black Diamond Cosmo in their Black Diamond Cosmo Review roundup. However, it fell short of making it to the top of their list.
As for the Black Diamond Iota - OutdoorGearLab, a source that conducts reliable hands-on testing, has featured it in its Black Diamond Iota Review roundup. However, it didn't make it to any of the top spots.
When we thoroughly analyzed their review scores, we learned that all of the sources that tested both Headlamps, including OutdoorGearLab, preferred the Black Diamond Cosmo over the Black Diamond Iota.
We also took a look at which sources they managed to impress the most. The Black Diamond Cosmo was liked best by OutdoorGearLab, which gave it a score of 9, while the Black Diamond Iota got its highest, 8, score from OutdoorGearLab.
Lastly, we averaged out all of the reviews scores that we could find on these two products and compared them to other Headlamps on the market. We learned that both of them performed far better than most of their competitors - the overall review average earned by Headlamps being 6.0 out of 10, whereas the Black Diamond Cosmo and Black Diamond Iota managed averages of 9.0 and 8.0 points, respectively.
Due to the difference in their prices, however, it's important to keep in mind that a direct Black Diamond Cosmo vs. Black Diamond Iota 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.