I like J.W. Speaker lights - twice what TruckLites go for, but IMHO a better beam pattern, better look, and they have a little internal fan that helps melt the ice off the lens (stirs the warm air inside the housing).
https://www.youtube.com/watch?v=ygvYo7Zjq1M
Oshkosh has been showing their newest truck with J.W. Speakers (they used to use TruckLite):
And Harley Davidson entered into a contract with J.W. Speaker for factory LED headlights (notice the HD branding in the face of the evolution lamp):
Like others have said, what ever you put in, keep it cool by circulating air behind the assembly - and spikes are nasty with these, if you can put in a TVS-suppressor on your headlight circuit, the headlights will thank you for it...