Back to the topic. My friend works in a hi-fi studio. Have these same summoned and he told me the whole time.
THX speakers are designed entirely to watch movies. As an example, he showed me once to his hi-fi system, that when he turns on his 5.1 digital amplifier THX, it sounds as if to make the high and mid tones from the field.
My conclusion: Take the "Z-4" or better the "Z-Cinema" !!! There you have the Muskihören viiiiiiiel more joy!