The one thing you should think of when buying, is that this assembly on your head has some weight.
I bought one that was build like the one you posted in the past. But everytime i was looking down it was slipping.
Now i have one with a band arround my head. It sits more stable and after modding it it is working nice. I put a different kind of led in it (stronger and better color) and put some real soft natural leather (as a sweat absorber) in it.
The one i have is not exactly this one but it is close. It also has different lenses that can be used.
But there are some newer ones that are better build now. With light, lenses that can be changed and a headband that holds the light where it has to sit.