Big conventional (dynamic cones in a box) type speakers can be "dynamic" in the difference between loud and soft, with enough good amplification behind them.
I use a hybrid- horns from Avantgarde but supported by additional larger subs in addition to the integrated woofers that come w/ the speaker.
The key for me in this system is the amp- it enables me to use the Lamm ML2 which has a character that emulates real music.
Using high sensitivity speakers requires a lot of attention to noise- grounding anomalies, other stuff that you would not necessarily hear through a less efficient system.
It's a choice, like any other, in hi-fi. The big Cessaro, with bass modules, retailed for over 1 million last time I checked.
I've heard Jeff's set ups-- he is the real deal, knows records.