Whats your choice? surely head is better (well, so the wife says!)

both IMO

boom tish

both. floodlight on the bars, spotlight on the head.

I could only afford bar mounts, but head is generally more versatile. Really comes in on tight, twisty stuff. Turns out you don't always want to look where the wheel is pointing…

If you can only afford one, on the head is where it should be

thought i'd do the wife gag before one of you did!

i find helmet-mounted-only gives a 'no shadows' look that makes it much harder to judge depth.

I I had to ride with just one it'd be the head one every time. Goes wherever I'm looking and the one on the bar only goes where I point the bike.

as above. Both is best. While you can see round corners with the head, it doesn't create good shadows and therefore makes obstacles harder, so even a cheap 'Tesco torch' type supplementary light to do that is worthwhile

So what are we saying? If you have the option, Use the best lamp as head lamp, and other as bar mount or 'tuvver way round?