See topic. I always thought the XRE was by far superior but the XPE seems to have a smaller die size. Or is the XPG2 better in terms of surface brightness? Maybe dedomed? Dedomed XML?
I honestly dont know and hope for your help to replace the fried emitter in my ZY-C10. :)
Depends on the die size: The XR-E EZ900 uses the 0.9mm*0.9mm die, which is the reason for it's high luminance (or "surface brightness"). (The smaller viewing angle doesn't help for throw btw., but gives a bigger spot size)
As far as I know, the XP-E uses the 1mm*1mm die, which reduces the surface brightness by 20% (compared to an equally binned XR-E EZ900). R4 instead of R2 gives about 14% more output, which in total gives still 9% less luminance.
I haven't checked the XP-E2 datasheet yet. What's it highest available binning?