I have just bought a luminator and its the bollox.
Still use my hope vision 4 on the handlebars (very wide flood) and helmet mount the luminator (more focused spot). They compliment each other really well, although the luminator is much brighter, and more compact, and has longer runtimes.
Luminator is well contructed and has a good quality waterproof battery and doesn’t feel cheap like some Chinese alternatives. The light quality/spectrum seems slightly better than the hope but in its defence the hope is almost 4 years old and technology has moved on I guess.
The luminators helmet mount was a bit big, but I’ve used the helmet mount off my hope (possibly from an old vision 1) and it fits perfectly. 😀
I can’t say enough good things about the luminator, its such a bargain for the price. Oh and it glows in the dark.