Sorry, rear lights are probably done to death but what the hell.
I'm after something like the Flare or a Backupz, which attaches to the bike nice and simply and can be swapped between bikes without also moving brackets (or buying a bracket for each bike).
Backupz I have, but I'd like something with more grunt. Flare has its appeal, but not keen on the power source - would prefer either AA/AAA cells or an internal cell like the front Maxx lights.
Anything out there?

