Zu Definitions. I bought them instead of Aavantgarde. You will get the dynamics and speed, but you will not get the horn tone. Moreover, the Avantgardes just don't integrate. No matter how far I can position myself from them, I hear each driver separately. Definitions will give superior coherency. Also, for domestic environments not totally handed over to audiophilia, you can't beat the Definition's space utilization: in 1 square foot of floor space in a column 49" high, you get a speaker that is neutral, natural, coherent and consistent 16Hz - 25kHz, with an integrated sub-bass array.
Phil
Phil