That light's output is rated in candela (candle power) which rates light output that shines in a particular direction, so it can be greatly influenced by the reflector design. Most lights are rated in lumens, which is a measurement of light cast in all directions. If a light source such as an incandescent bulb puts out 100 lumens in a 360 degree circle, 120 degrees of the light would be useful in a floodlight application (about 33 lumens); and if a fairly good reflector/lense is used the about 85% of the other 240 degrees of light would be useful in the same floodlight application. 1 candela equals about 12 lumens. Mfgr's may use either candela or lumens to rate their product; whichever makes it look better that the competition.
Every light type except LED puts out light in 360 degrees. LED's put out light in a 120 degree beam, so for a flood light no reflector/lense would be required, and for a spot reflected light with it's associated power loss will be required.
A spotlight uses a much narrower beam so in all case (LED, non-LED) a reflector/lense is required.
LED's are at least 3 times more efficient than all other light sources except compact fluorescent which is never used in a spotlight application. LED will provide "more light per size of light housing at a much lower power consumption & therefore much lower heat output. I would imagine that your light to do a proper job would require at least 500 watts of power, which is a draw of over 40 amps in a 12volt system, so the 50% less power consumption of LED's is a big deal. Unless you are running at speed, your alternator will not put-out enough power & you will be drawing from battery power.
Most lights that you NEED to satisfy your requirement are in that price range. Some have a combo spot/flood beam.