They are all talking out of their arses
the DX bastid and other P7 lamps say 900 lumens but we know cos they have been lab measured to be approx 550 lumens .
the P7 manufacturers rating is 900 lumens at its full drive current and if it could be kept cold so they are quoting the theretical max lumens .
same goes for the xml rated @ 1000 lumens at 3 amp drive if kept below 25 degrees c
the 1200 lumen claims are fairy tales but will suck in some punters .
I have measured the drive current for this XML light and it was 2700 ma so not a bad effort on the makers
it will be going off to Chris the lumen testing guy for a shakedown in his lab when I find his email again so we will know the true lumen count .
as Smudge has said we may be selling our souls to the devil and shipping some in but only if we are both happy with the quality and the fact we can provide a good aftersales service if any go tits up .
yes just the light heads will be available for those wanting to upgrade