Usher BE-718 & Zu Druid Sepakers

Hi, I'm using McCormack DNA225 and Usher BE-718 at the moment. Someone whos is staying nearly 300km from wanted to exchange Zu Druid with my Usher. So, demo is not possible as once he make the journey pity for him for me to say no because of the sound if I were not to like it.

So, I'm asking you guys out there who has the experience about Zu speakers. I know that Zu has 101db suitable for low powered amp...
cheers!