10" subwoofer around $500, used or new?


I'm looking at a 10" sub for a 20'x11' room (in an apartment, hardwood floors).
Mostly for music (and 5% for movies). 

How much has technology improved?

Should I got for a used $500 sub which were original $1,000+ ? Eg: 
- Rel strata
- Boston PV1000
- Totem Dreamcatcher
- MJ Accoustics 100 Mk II
    ** OR **
Today's subs around $500 new will give a better sound? 
- SVS PB1000 10"
- Martin Logan Dynamo 
- Klipsch R10SW 10" 

Any other suggestions for new, or used sleepers to look out for?

Thanks!
zordex
Why settle for a 10" when for $539 shipped you can get a Rythmik L12, with not only a 12" woofer, but a servo-feedback controlled one?!
I’m very happy with a pair of SVS SB1000. A sealed design with cabinet under 14x14x14". The driver is 12 inch. As Bob Reynolds mentioned, the SB1000 allows for speaker level or line level hook up. It also has continuously variable adjustments for crossover, phase & gain. SVS offers a 45 day in-home trial with free shipping on returns. So, while I have no idea how it would compare to your Velodyne, you could decide for yourself. 5 year warranty too.

And, NO, I’m not affiliated with SVS other than having been a paying customer; nor am I being coerced, induced or otherwise motivated by them to reply to you.

Sure. Lots of options out there. You can definitely spend more and might even get something audibly better as a result.

SVS SB12-NSD - $399 delivered.

Amazon or One Call. SVS has a 5 year unconditional warranty.

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