There is a difference between brands. dont get me wrong there are plenty of amazon and ebay light bars that are bright but they dont hold a candle(see what i did there lol) to the big name brands like Rigid, Vision-X, etc... Alot of brands will have the same wattage/chips but its in the optics and reflectors that the big names put money into developing that makes a big difference. Dont be fooled by the advertised wattage either. wattage is nothing without proper reflective engineering and quality optics. Also warranty is another thing to look at. the amazon and ebay ones are usually only a year where the name brand ones are much longer. Rigid is lifetime...
I'll see if i can dig up a thread from another forum where they compared a bunch of light bars with a calibrated lumen meter. this was done by enthusiast not a company so i feel that makes it even more credible.
