Are those Hella's HID's?
I have seen a number of comparisons on line, and the LED's really throw a lot of light out there, and, as you say, are very compact.
If you are looking to do things less expensively, and use some tools, this guy made some that seem to work REALLY well. (not to mention he has one of the sweetest Taco's out there right now).
Otherwise, Rigid seems to be the way to go.