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I think they're great
As just lights, they're both as good as you'll need, even for pitch-black country riding. The Fly12 is ludicrously bright (and has a number of brightness / flash settings), although is quite a narrow beam.
The rear is bright for a rear light too, and has a number of brightness and flash settings.
The camera for both is also good - the footage shows number plates in most conditions.
And they are relatively easy to use - they both connect to PCs / Macs via cables, the Fly12 can also be used over Android, although I only ever plug them in to charge them up. The footage overwrites itself, so you don't need to erase the SD cards, and a 64gb card will last for a good number of hours at full definition.
Battery-wise, they will last a couple of hours, depending on the strength of the beams being used.
The USB port in my Contour Roam2 just died.
Trigger pulled on a Fly12.
Stay tuned for more thrilling updates.