Im no expert on the subject but i can tell you my experience with the AVIs if its of any help.
I got the speakers last november to replace my B&W 601s. The change was jaw dropping , more detail and precise timing (i did lose an octave of base but in exchange for tighter sound with no bloat)
My problem was harsh piercing vocal presentation which was very hard to live with. The manufacturer recommended a higher wattage amp and, not wishing to give up the speakers , i bought a Kandy to replace my much loved Rotel 1062. Much smoother sound but things were not quiet right.
Looking for help i sent an sos out to the web and recieved several responses telling me to try Atlas cables. I owned the highly regarded Chord Oddesey and was sceptical but on replacing them with the Hyper i have much smoother highs without losing the verve of the music , a more extended base and the a deeper sound stage (which i didnt expect).
Now i dont have golden ears and ive payed good money for things that left me feeling very foolish ( russ andrews manis filter!) but i find i can listen to music for longer and without fear of female vocal comming across like a banshee!