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Eeyorecore
motoko
There is an interesting article in the most recent issue of Bicycle Quarterly with some of their testing comparing the Beacon, IQ-X and Edelux II.
Conclusion is that for road riding the Beacon performs particularly poorly in terms of beam shape and lux at 10m compared to the other two. The IQ-X is generally brighter than the Edelux-II, but does draw more power and has a slightly poorer beam shape.