Okay, I'm not really grasping the audible difference in the "dynamics", since as my previous comment implies, I'm of the view that accurately reproducing the dynamic range in a recording is a minimum requirement for a quality speaker, and that two quality speakers with overall sound differences should be essentially identical in the dynamics aspect.
Be that as it may, another point you mentioned was speaker "efficiency"(sensitivity is maybe a better term since even that 100dB/1 watt number equates to only about 9% efficiency). Why so much emphasis on a speaker that could do even the loudest peaks with a 10 watt amplifier, when units rated around 100 clean watts are readily available at modest cost?
