I would suggest getting a decent HID setup as this will provide a far greater amount of light, plus also use a lot less power! Just ensure that the kit you get is one with HID low/high beam!
I've got an engel 60L its been fantastic, I have it running 24/7 and cant fault it. I think the built quality of these units is far superior to waeco, I can't see the plastic case lasting as well.
Thats exactly what I was thinking, time to buy American again!
I'm sure if I do a bit more of a search on other forums I will find out, I just though somone might know as they may have orded them before.