Eljaro, your comment was very astute. You are quite right that the two Avantgarde systems were not set up properly. When I heard the Uno's, the room acoustics was not very good, and the dealer had not found an ideal setup for the subwoofer modules. In fact, when I started listening to the speakers, one of the subs wasn't even turned on. It was only when I complained about the lack of bass that the omission was discovered.
The Uno dealer did have the speakers set up properly, but probably did not hook up amps that would do them justice. No option of bringing my own amps since I had to fly to a different city to hear them.
Dan-ed, the Acapella's were demonstrated with a 55W SET because I specifically requested for an amp similar to mine. Once again, no option of bringing my own amp as the speakers were in Sydney. But it did demonstrate to me that I am unlikely to achieve ideal sound with my current amplification - so I did achieve one of my objectives. At the moment i'm doing a bit of amplifier research. I found an old thread on Audiogon discussing suitable amps for the Violons. When I get my speakers and do some listening, I will decide for sure whether or not I need an amplifier upgrade. Then you will see another post from me on Audiogon :)
The Violons are bi-wirable, although the dealer recommended that I do not do so. He found better results running a single cable to the woofer module, then another length of cable to the midrange horn, and from there to the tweeter module.
Whart - no break in is necessary since these speakers are secondhand and a few years old. I will be able to enjoy them the moment I get them! Unfortunately that won't be for another month ... at the moment I am mobilizing some money and the dealer has to arrange to ship them interstate.
I would like to thank you (and others) for the invaluable help I have received here. And thank you also to everyone who has emailed me ... I now have some new friends from all over the world. The next time you are in sunny Melbourne, make sure you drop me a line.