We've got the LED floods's on our front end loader...six on the front and two in the back. Also have five flashing LED beacons and signal/brake lights. They are awesome, but the thing I like the best, is they don't burn out all the time like the incandescent and halogen bulbs.
The only draw back I can see with these LED lights, is they don't generate any heat. So, I wouldn't use them in the winter for tail lights. Once snow covers them, they are not visible at all. Really notice that with all the "big rig" trailers around here now. They pretty much have all gone to LED's and you can't see their tail lights...pretty dangerous in my mind.
The Hauler - '05 F-350 4x4 CC Dually 6.0 Powerstroke
The Project - '90 Ford Bronco 4x4
The wife's - '11 Ford Escape
For every minute you are away from work...you can add two minutes to your life!