"lux test the LEDS of a P7 tourch against the HID the leds are almost twice the output"
SD keeps rolling this one out but will never state how old his HID bulb is, which rather makes the test useless unfortunately. if you look at the welch-allyn data sheets there is a clear correlation between hours of service and light output.
Sorry for trying to be constructive but perhaps if the question was asked how old the HID I would of said about 4 years old and aproximatly 50 ish hrs use. I would say that the lux test is a honest test as opposed to reading data sheets ( which anyone can do but it does not allow for manifacturing tolerances) because I did it back to back in the real world ok my garden, not a lab
But of course it is of no indication to how usable the light spread of colour rendition is, thats where using them comes in, hence that is why folk still like there old Lumi halogens