What we don’t know (and I wouldn’t expect Hope or any other manufacturer to say) is the actual rate of returns. It could be 0.1% or it could be 10% (unlikely).
I’ve a Vision 2, it’s about ten years old and has worked flawlessly for that time. I’ve used it on the bike and for fell running, about the only thing I haven’t used it for is picking the bike up. My wife also has a Vision 2 of even older vintage with the same level of reliability. She also has a more recent R4 which has been back to Hope as the circuit board was faulty.
Brakes – currently got Shimano XT on my hardtail, adequate for my needs.