I work more in live sound than in consumer/home audio these decades. I have heard a very substantial difference in impulse response between: vented boxes, sealed bass boxes, band-pass subs and horn subs, at the same 80hz. crossover. I will agree that they have different pros and cons when it comes to box size, efficiency and F3 (per Hoffman’s Iron Law). As a result, in very high-performance systems, we may use horn-loaded (or lower Le woofer) bass boxes for the upper half of the subwoofer band-pass, versus different sub types (sealed/servo), with a lower F3, for the lower half. I’m currently publishing an article on the subject, in the December issue of Front of House magazine.