Pinging Tireguy...(he owns these)...while I have heard them I am sure he can paint a much better picture for you.
Oh and you get more amp flexibility among other things with higher efficiency, just make sure you have quiet AC lines and equipment if matching to high efficiency speakers to avoid noise.
Oh and you get more amp flexibility among other things with higher efficiency, just make sure you have quiet AC lines and equipment if matching to high efficiency speakers to avoid noise.