Update: I bought the torch that Singletrackmind recommended above on 20 September, paid £11.17 and it arrived yesterday. I think its about twice as bright as the P7 it replaces and trying it out with my Lumi Led3system (spot, not flood) it seems just as bright up to about 10 metres (nice wide coverage) but the Lumi beats it at distance.
Its flippin bright, nice & light and with a couple of Smudge’s batteries I got the other day, I’m set up fine for night rides now.
The really good thing is that it comes on at full beam. With my old DX I needed to cycle through a couple of clicks to get full beam, and as I only use the headtorch in twisty stuff I often didn’t get it right.
It’s one of these on eBay – 1000 Lumens Camping CREE XML XM-L T6 LED 18650 Flashlight Torch SRT6.