I also have a Hope Vision 4 – 4/5 years ago, it was a rather nicely engineered, rather expensive LED light, that ‘just about’ held it’s own amongst a sea of Lumicycle halogens.
Unfortunately, compared with the current crop of Cree’s, it’s simply old technology and can’t compete.
It breaks my heart to leave it sat at home and strap a couple of <£25 jobbies to my bars/helmet – unfortunately it’s something I have to accept – it’s cumbersome and doesn’t emit a great amount of light. For a solo ride, I’m sure it would be fine, but doesn’t cut it on group rides.