Originally Posted by daoswald

...Light & Motion Urban 900 -- I thought it was great while it lasted. But eventually a recessed manhole cover at 30 MPH exposed its Achilles heel: The flange molded into its body that mates with the handlebar mount snapped clean off, rendering it unmountable with anything less than duct tape. It was ruined. It lasted me less than one season. The other flaw is that its USB charge port cover falls off every time you open it (this is part of its design), and it is made of a plastic that grows weaker every time you open it until it eventually separates from its retention point forever. I wrote to L&M about this, and they acknowledged the flaw and sent me four more USB port covers (about a month before the mounting flange broke off). The daytime mode is similar to the oscillation of a sine wave; it oscillates between low and high, it doesn't strobe. I liked that it had side marker lights, though I don't think they're terribly effective.