Matt : im weird, i'll admit to that
I did my research and what I thought was correct. Large drivers DO have cone-breakup at low frequencies. If you look at the cone of a 12-18" woofer producing 30-50Hz with a strobe light all you will see is the cone flexing all over the place. Its distortion galore. And the larger the cone, the worse it gets. I also never said pro audio aims for clipping. The woofers generally produce very high levels of harmonic distortion. In fact all woofers do, If you get down to 1% your doing pretty good.
I love the sound of sealed quality woofers and quality horns. I honestly do not know why. Horns are rarely considered "quality" midrange or tweeters.
I suppose in the end, I like bass tight and flat. I prefer a system that can produce below 30Hz with low distortion, Yet I like bright highs and strong midrange. most pro speakers ive heard always sound boomy and hollow to me.