I have a pair of the Omega Super 8 XRS currently not being used. When I have used them, I ran them alternatively with a Bedini 25/25 and a pair of Wavelength Cardinal X2 300B mono blocks. A great pairing with both amplification sources, especially the Cardinals. The sonic qualities you are looking for were well portrayed with the Omegas. I cannot comment on the Zu speakers as I have never heard them.
