I agree with Toendanger.
I did a lot of research on this a few years back and determined, a lot of LED light bars are manufactured by Totron, but they don't label their product or their box...so people can resell them under their own brand, like all the names you mentioned above.
The thing to watch for when buying an Ebay
/China bar...is you want a CREE, not Epistar. Cree is the brighter/new LED bulbs..and they will always be slightly more expensive then their Epistar counterpart.
The other thing to look out for is the new single row 10W bulbs insteads of the double row(they both fit in the same housing)...but from what I read...the 10W throw further because the reflector is larger/deeper.
I have purchased 2 LED light bars from this ebay store....both came from china to Texas in 3 days and the store has like a 99% rating. They are super bright, I still have no moisture, and never had an issue with either one. (I have personally seen Rigids with moisture buildup...so they are not perfect) I have compared it with a Rigid side, by side and the construction is 100% identical. At the time I bought mine a few years back...the Rigid 32" was $1,200 and I got mine for $280...I believe they even cheaper now.