Zebralight looks interesting but for the life of me I can't distinguish any substantial
difference between the two models. And if I'm going to spend that much money I want to know exactly what I'm paying $10 more for. The descriptions are the same ie: "the perfect light for camping, etc." except for some strange "lm" output rating.
Could this be a lumens rating?

Also, they have no USA return address, yet...The lights ship from China.

A good example of what could be a good product let down by poor marketing skills.

I like what I see, but I wonder what makes the difference between the $40 model and the $50 model and if the company is going to be around in a year to support the product.