I buffed the Haiku a little bit using a Rust Eraser, which is basically a rubber block with carbide grit mixed in. It didn't do much besides take the peaks off the impact marks. The fact that you can't see them is a testament to just how hard 6Al-4V-90Ti alloy is. :twothumbs If you look really really closely though, you can see tiny dings around the top of the head.
The reflector on the Haiku is about 1.5x as deep as the reflector on the Lunasol. Looking at them from the side, the Haiku's reflector goes to the bottom of the last heatsink cut, the one that cuts further towards the center than the others. Below that is where the light engine is installed.
The Lunasol's reflector goes to the bottom of the thick upper ring, the one with the scallops cut into it. Below that is empty space that houses the two separate driver boards for the flood and spot beams.
The reflectors on the XR19 and the PD-S go to the bottom of the scalloped areas on both lights, respectively. Below that is empty space that houses the single driver boards.
The Mule has one of Don's new ultraviolet light engines installed in it. That thing is bright as hell, even unfocused. You definitely don't want to look at it when it's on. I put a glow-ring on it to make it obvious to anyone who picks it up that there's something different about it, and also to provide enough visible light in the dark that hopefully some unfortunate soul's pupils will close at least a little if they happen to point it at their face. The glow-ring lights up like crazy next to that UV emitter.
Here's another picture of the Mule, this time with the emitter turned on. Remember, this is just the
visible light output. My eyes were getting tired just from the indirect UV that was sneaking around the sides of the camera.