I have the 20" LED light bar Extreme Terrain sells, mounted on my front grille of my Jeep. It's definitely bright and so far, hasn't gotten any water inside it either (supposedly a problem with some of these light bars, if you don't open them and reseal with silicone caulking all the way around the seams).
I can't really say anything bad about the product, BUT, when mine arrived, it came in a generic brown cardboard box that looked just like what the generic Asian-made LED light bars arrived in that people were buying on Amazon or eBay for as little as $99-129 or so each.
My guess is, the Raxiom ones are just re-branded generics that you pay 2-3x more for because they pre-select the best ones out of lots they receive, and they add the lifetime warranty. (With that much price markup, they can afford to exchange one that dies and still come out ahead.)