Thanks for the replies!
spankone, I'd ideally like a light designed to be mounted on a bike. I've admittedly only tried the TwoFish Lockblock, but so far I'm not convinced by flashlight-to-handlebar mounts: fiddly, likely to move when you don't want it to etc.
In view of the rather narrow beam mentioned by
srolesen and
I Know Nothing's assessment that the Hope light is unlikely to meet my requirements as well as a much cheaper light, I think I'll just try to buy another PT EOS Bike of some sort, either the old version to mod again or just the newer version...