Glenh, maybe your right but I do have look at the homebrew threads and I am not sure its done just yet, there sems to be quite a few different types of LED the homebrew guys are using, the torches are agreed limited, I did cover that in my post, just have to make a rational decision on what you really need to get out of a light in terms of power and runtime.
I also agree the Hope stuff would be great quality, I said as much earlier, but my opinion stands for now I dont think I would be wedging out a lot on a bike specific light, when right now I can get the same power and runtimes as a Hope for £50 albeit with a change of battery to get a similar runtime.
Its just an opinion, they do vary.