Legacy Audio Focus 2020, or even better the newest Focus HD. But don't go hear it unless you are ready to decide, your search for the best rock speaker will be over. Great on everything else too. But the bass is supreme, huge, fat, dancy, shake the house to the ground down to 16Hz. Efficient, natural mids and highs, easy to listen for many hours. Likes current for big rock bass, but fine with smaller amps too. Preowned 2020's from $3.5k, new HD from $6k. I have 10k+ cubic feet and it fills it up easily. I sometimes listen to rock and big classical from 30 feet away while cooking with the amps floored. Awesome. HD has better resolution, still very musical.
Enjoy your search!
Rich