First impressions on the
Petzl Myo RXP pimpy headtorch: "Oh, bloody hell
yeah"

On Bastard Mode (3W LED) with the diffuser it floods the whole field of view, hedgerow to hedgerow with just a little deliberate cutoff . Without the diffuser the spot is such that you can see to the bottom of the hill (pick your hill!). Moths have spectacularly shiny eyes when hit with it.
On the lowest power setting it's camp-friendly.
The battery box is nicely curved from slightly squishy plastic and sits just under my occipital ridge with no movement at all. The lamp likewise is light and steady. I ran for 35 minutes and it was a dream, letting me open up as fast as I can go downhill with no worries. Like a good bike light, it ticks the "you can go as fast in the dark as you could in daylight" box, and that's exactly what I wanted.
Some nice details in the cord clip and the way that the lamp can be positioned for transit so that the power switch is blocked by the frame. I haven't tried the programmable modes because "Bastard", middle, lowest and SOS seem like sensible defaults for now.
It's heinously spendy (still less than the Hope!) but I firmly believe in good lights. Good lights let you play. I'll scrimp elsewhere.