REL S510 or S812

I'm looking at either the 510 or the 812. Rel is having a sale this weekend $500 off the mid-line S series. I'm running lower powered tubes and Devore speakers. I love bass that envelops the room and crack the pavement in my driveway. I'm a product of the 80 NY club scene so I want bass that rattles my mailman's dentures out when he goes by.

Any further thoughts on the two? It's a $500 difference. Currently has an SVS3000 that I like, compared to the T9 a few years ago, and went with the SVS. Like most audio once you get above entry level companies seem to pull ahead.  

Not set on Rel if another brand makes more sense. 

Happy Thanksgiving!

Im very happy with the 812.  Admittedly, I don't have much to compare it to as it is my first higher end sub, but the high level connection works as advertised.  Separate volume controls for LFE and high-level is really nice.  For HT use, I'm sure you could get more boom elsewhere, but I kept my REL HT1205 and use both for movies....sometimes music too.  

Can you feel the bones in your ears rattle?

Is your SVS 3000 a sealed enclosure or ported?  

I have two S/510.  They have more than enough output for accurate music reproduction, but they aren't quite enough for loud explosions, etc for home theatre.  I use a third SVS 12" ported sub for that.  The REL S Series is really more about accuracy than output volume.

I've never tried to crank the S/510 beyond what's needed for accuracy.  I would imagine that with the right type of music and cranked up, they would get pretty loud. 

SVS is sealed. Great sub.

Leaning toward the 812 at least I’d say.