I bought the xanes after doing a search for budget lights. I wasn't as impressed as others have been. The power button in particular requires a lot of pressure to activate, and is very finicky, as you have to press exactly in the center, straight down to turn the light on. Press it at an angle or off to the side, and it won't turn on. Add to that, the button is triangular, a terrible ergonomic decision.

It's bright enough for slow riding on multi use trails. It's less useful in traffic and/or when riding at pace. Overall, it's a decent light for being seen, but less useful for actually illuminating the road. Also, the beam pattern is very strange: it doesn't throw a uniform wide rectangular beam , nor does it have a circular hotspot. The beam pattern if you want to call it that, is just a mess--lighting is very uneven, with some areas brightly lit, others dimly so, again in no uniform pattern.

It's a $10 light, so keep your expectations in check; it simply can't compete with higher priced lights. Once you buy higher priced lights, you won't want to go back to using cheap lights.

If I wanted to pile on, I would add that the mount is not especially secure, and removing the light isn't especially easy or convenient. Then again, think about all of the features you're getting at this ridiculously low price point: usb rechargeable, quick release, and internal battery. Overall, it's a much better option than a cheap flashlight if you absolutely cannot or will not spend more than $10.