Who are some of elite sub woofers?

Gonna say REL here. It was a huge step up from the Hsu Research sub that I had (and that one was already pretty nice to me at the time). 

Here's a technical article essential to understanding subwoofers https://drive.google.com/file/d/0BxgUOGOB5HbfR0JTRF9XZjkyUms/view

REL for audio. JL is better for home theatre. SVS is not "elite" (the OP's words), it's for the masses. 

Sure, JL is elite if you consider charging your customers $300 to repair virtually new subs with known quality problems the price of "elitism". The v2 fixed the problems, time will tell.

SVS has excellent cutomer service and 

I’ll speak up for SVS as well...whether "elite" or just for the downtrodden masses. They definitely improved overall sound quality of my system. I’m running a pair of SVS SB1000s (sealed, 12", 300 watts) each located just inside a floor stander (Totem Forests or Silverline Prelude Pluses). I hear none of the issues millercarbon mentions. Apart from the blue LEDs being on, you don’t know they are until switched off. The bass they support is seamless with the main speakers, nuanced and textured...hardly "one note" and definitely not boomy. With a 45 day in home audition option, a 5 year warranty and "free" shipping (even on the return if you don’t like them) they’re worth at least considering.