Here are some shot's comparing an LOP SE on high w/ an SV1H Lux I (Left), the Cree monster at 1 watt or ~320mA (center), and one of my Luxeon Arc mods w/ an SWOH Lux I driven at 1.5 watts or 470mA (right). The lights are about 1 foot from the wall.
Here's some photo's of my first trial runs. Unfortunately I'm not good with my camera and I didn't figure out how to turn off the auto adjustment for exposure. So the difference for the different drive levels isn't as obvious in the photo's as it actually is in person.
LOP SE on high (stock driver w/ an SV1H Lux I) vs. Arc AAA head w/ Cree XR-E (P3 brightness). The lights are about 6 feet from the wall.
Arc Cree @ 180mA
Arc Cree @ 240mA
Arc Cree @ 350mA
I had another photo here but I removed it because it gave the the illusion that the reflector was way off center, but it was because the very edge of the polished reflector is at a different angle. The stock reflector is a little larger in diameter than my cut for the new reflector.