I have used Light & Motion lights for a few years. They're bright, I like the pulse and flash mode, and it lasts long enough for the normal short ride in the morning or early evening. I have two mounted on either side of my road bars on my Surly so they clear the handlebar bag. They're also easier to adjust up and down for courtesy to oncoming riders or pedestrians on a trail.
The Urban and Vis series have one common flaw. The cover over the charging port is prone to breakage, and is not really secured well to the light...so it will also come off and is easily lost. It covers the port nicely, but I've lost them off every L&M light I've owned.
One of my lights has developed a charging symptom - it will turn on when it is plugged in, and if I turn it off with the switch, it will not charge, but flashes either a green or red light depending on it's mood, I guess.
So, not the perfect light, but in general quite good. They do the job but have their issues.
Summary says it all
I use for daylight biking as added safety to ensure autos see me oncoming and cross traffic at stop signs, cross traffic and red lights.
