I have been using a couple lightbars from Arsenal (chinese I'm sure, bought on Amazon) for several years now and they've worked great overall. Hard to complain about the price. I paid somewhere around $100 for my 42" lightbar on my Prinsu rack. Have a 20" in the bumper. Personally I am a huge fan of HIDs which is why I still have 3 HIDs on the bumper. I haven't found a lightbar yet that can throw light as far as an HID. So I use the LEDs to light up all the close to mid-range area in front of the truck and the HIDs for way out there. Driving fast offroad at night it's nice to have an extra second to anticipate turns/obstacles. Would I be outrunning the light from the LEDs? probably not, but I've been spoiled with HIDs for a long time so I'm used to having that distance. When I use just the LEDs I'm always a little disappointed (even when I've used nice expensive ones in other trucks) because I can't see as far.
But as others have said, its difficult to justify the massive gap in price of LEDs from some companies compared to some of the chinese offerings. I'd rather put that money to something else.
Untitled by
Adam Tolman, on Flickr
Here's a little video from a year or so back with my lights on. Pretty clear where the LEDs reach to and you can see the three spots of the HIDs in the distance to give you an idea of the difference in throw.