Do you highpass your subs? If not I would start there.
good speakers are good speaker but stand mounts (passive) just don’t have the dynamic output need in the lower bass and this Is where the high pass comes in.
You need dynamic speakers imo and that often goes with high efficiency. Stand mounts are not high efficiency… maybe try to demo the JBl 4349. Music direct has a 60 day trial period on them.
On a personal note I have liked my revel 228be with subs on heavy bass/dynamic music. The 128be or 226be might be worth a try. Again 60 day trials at both music direct and crutchfield with no question asked returns. The revel have a bit more upper mid energy where the Sonus Fabers are a touch down (1-3khz) and seem to have a bit more bass impact but less bass volume, if that makes sense. Flatter but harder hitting, less warm and round. Very subtle as all these are pretty flat.