(I prefer the moon ring as a rear light though, really good, though battery life relatively short).
I prefer comet x pro over ring, and I like the under saddle mount you can get for those. But for the ease of fitting/removing the Orion is great.
Thought the addition of the reflector was an improvement over the ring.
@greeno started
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(I prefer the moon ring as a rear light though, really good, though battery life relatively short).