Holy mother of god........ Just ordered one of these retina melting beasts as a new front light.
All in, including batteries and charger was £73 delivered. A little bit bigger than an Exposure Maxx D at 14cm long and 7cm diameter, but uses 5 XML T6 diodes to give a claimed 4000 Lumens...... Even if it's half that, for this price it will be insane value. 2-3 hour run time too which experience tells me is about right.
Got to make a little bar mount up - thinking I'll just modify a standard bar mount from something else.
Will keep you all posted once it arrives!