Light bars are real pricey and only about 20% of the lights on the market are actually worth buying (majority made in china with really low quality). Light distribution is fantastic but I'm pretty sure you can only legally only use a 50" bar on private property or bushland due to the fact that they are to bright to use on roads. Bars are expensive so it is worth paying a couple hundred bucks extra for a quality product.
List of best and worst buys (in order)
Best:
1. Rigid industries - http://www.snakeracing.com.au/rigid-industries-LED-lights.html?gclid=CPqMzoK3rLkCFQVapQodrToA5A
2. Baja designs - http://www.bajadesigns.com/products/led-lights-led-light-bar/stealth-led-light-bar/stealth-led-light-bar-black
3. Great white - http://www.greatwhites.com.au/index.php/bar-light
4. Wurton - https://www.wurton.com/Wurton_Off_Road_LED_Light_Bar_Products_s/1817.htm
5, Kulklyne - http://www.kulkyne.com/au/LED/
Worst:
1. Roo systems - http://www.roosystems.com.au/products/led-lightbars/roo-systems-led.html
2. Tiger 11 - http://www.tigerz11.com.au/product-category/led-lights.html (roo systems and the tiger 11 light bars are exactly the same imported product)
3. Iron man - http://www.4wd1.com/IronmanLED-Lightbar.htm
4. Budget ebay light bars - http://www.ebay.com.au/itm/8-5-INCH-24W-LED-LIGHT-BAR-HIGH-POWER-WORK-LIGHT-2400LM-4WD-SEC-KIL-18W-15W-10W-/230855248716
5. Most cheap lightbars
What to look for:
- Quality LED's
-Quality reflectors (ones that look like a mirror rather than a dull panel)
- Resistant housing (e.g. waterproof, dust proof, cooling system)
A Rigid industries meets this criteria
What not to look for:
-poor quality led's
-bad reflectors (not a mirror like panel)
-cheap manufacture (shortcuts, low quality parts)
-Not resistant (e.g. no waterproofing, overheating)
This chinese made one below is manufactured by the same company that makes roo systems and tiger 11 light bars. Do not go shopping for these ones,
Hope this helped and that you get a good product that will last!