I have had great luck with Light and Motion products. I've owned the Vis 180 and Vis 360's since 2010. Both are going strong with daily commuting usage during the winter of about 1.5 hours roundtrip. I love the build quality and premium feel of their stuff. I've only had the light for two weeks, but have used it daily since it is already dark going and to and from work. Some things I've noticed. 1)The light isn't detachable from the latch, this is a pain especially since the latch really has to be cranked down to keep it from moving. I probably need to use the provided sticky rubber things, but since use it on three different bikes, that is a pain. Also it makes it less commuter friendly if you need to remove your lights from the bike. 2) Light output is awesome. In the city I use to lowest level so I don't blind riders. On back roads the 1500 lumens is awesome. 3) The beam pattern is pretty wide, almost too wide for my liking and maybe not as helpful on the trail since it makes it hard to focus on what is in front of you. 4) The unit has a really solid feel and seems like it will hold up for a long time. 5) The light has good adjustability in light output. Anyway, the light isn't perfect, but it is pretty darn good.