I ride all night on bad roads in bad weather. Flashlights won't cut it. Reliability and durability of connections to the bike and the battery are critical. Cheap lights fall of the bike. Electrical connections fail. Connectors leak. Switches fail. Now to the more subtle....try turning a Moonshine light on when it is cold. I run two Panasonic 3400Ah 186500 batteries into my $80 Fenix BT20 is sufficient for a 600K ride although I put a complete redundant backup on the bike. I only run them at middle level of power output, so, they would not light up a stadium. I think my life is worth $160. You have not lived until your lights fail.....on a mountain descent.
read this review....if after reading this link and my comments above, you decide to buy garbage....GL
http://www.bikeforums.net/electronic...-comments.html