We've done a lot of Dynaudio with Cyrus over the years, with other common brands being ProAc, Monitor Audio, KEF and ATC. Once you get to the level of the Mono X's, ampliiers can drive almost any speaker, so compatibility isn't really a problem, it's more of what matches to suit your personal preference,
You may have been impressed at the show because the system was illustrating just how good a quality small speaker can sound like when it's driven properly. All quality small speakers will sound great when using this level of amplification, especially compared to using just a 6vs2 or example. They'll sound like completely diferent speakers.