The magicshine isn't CHEAPLY made, but it's also not super durably made. It's middle-of-the-road. Really it only has two weak spots IMO for durability - the battery pack isn't really waterproof, and the wires and connectors tend to fray, going by reports.

I haven't heard of any reports of the lighthead failing. A few people have had problems and all have been the wires or connectors failing, or the battery getting soaked in very heavy rains.

A little tape on the battery and a ziplock bag takes care of that. As for wires, honestly, I have yet to have a light where the wiring didn't fail and I had to replace it. I'm already planning that for the Magicshine, when it fails. I like the rubber trailer connectors, I've put them on previous headlights and they're ugly but they always work.