I heard somewhere that the 8 ohm and 16 ohm models of most speakers sound different, with different resonance frequencies and efficiencies. The specs on the Eminence site now seem to bear this out. Ive also heard that people tend to prefer the 16 ohm models. I suspect this is where the mythology comes in, but I wanted to hear some informed opinions. Can you hear a difference, and if so, which do you prefer the 8 or 16 ohm versions? Im interested in the typical mainstream speakers (Chinese Greenbacks, V30s, G12H30s, Eminence Wizard, etc.).