Magicshine’s MJ872 does the exact same job as the R4, and does it just as well, for £80-ish. You’ll not get the same standard of warranty though, but on the other hand Hope lights aren’t always the most reliable. I know people have their perceptions of “cheap hong kong lights” but the better ones are genuinely good. TBH there’s probably better now, my 872 is 2 years old, but there’s no reason to replace it yet.
It used to be everyone recommended a flood on the bars and a spot on the head… That was because the floodlights weren’t good enough. But what with the lumen war, today’s floodlights are as effective at distance as spotlights from a couple of years ago. And a flood gives better peripheral vision.
Most of the time these days I just use my MJ872 on the helmet, with a cheap backup light on the bars just in case- that’s more than enough light to ride downhill with.