Mr Ted Bear,
I disagree that the KL1 makes the MN02 obsolete.
As things stand right now, LED technology is no where near as bright as incandescant lights and even the best LED doesn't have the throw. Isn't everyone trying to cram as many LEDs into a bezel as they can? It's the only way to produce comparable light. So far, I don't believe that you can get a pure white LED. Instead, it's called white because it gives true color rendition but it's not white: it's something with a tint.
The MN02 produces useable, white light from at least 30-40 feet away and even longer it you want general illumination. LEDs simply can't do that. Without putting words in his mouth, I think Craig said that the E2 blew away the LEDs.
What that said, some day, and I don't think that it's too far away, LEDs will be a suitable replacement incorporating all those technologies that make incandescants so nice but I also think that that regulation of incandescants will make them even more attractive.
To answer the question, I'd go with the E2e setup. X-ray can always switch bezel assemblies if he wants. I'm not sure that the A2 is, for me, a useful light. I like it for being a launch platform for future lights but this hybrid light simply doesn't appeal to me. Same reason why I don't really want a 10X either.