Who are some of elite sub woofers?

Vandersteen 3 with 11 bands of EQ to address room issues below 120 hz singles start at $3k

or the very elite sub 9 in a carbon fiber wrapped low resonance enclosure, also w 11 band EQ, they come in pairs...for about $12k

Thank you all for insight.
Budge I'm guessing $1500 but thought about only one?Millercarbon suggested 3-4? That would change budget considerably.

Look no further!  Yg Acoustics!  


https://www.ygacoustics.com/product/invincible

I’m gonna plug SVS simply because I own two SB-2000s (sealed version, 12 inch driver, 500 watts RMS, continuously adjustable for volume, phase and low pass filter) run in stereo. Not only do they sound wonderful, but they are well built, low profile and are priced for high value. Bass quality is quick and powerful with very clear, defined and textured sub-bass notes. I should add you could buy two for $1400.

Another +vote for REL.

Happy Listening!