Need a new sub.

I need a subwoofer and speaker stands. Has anybody heard these? http://www.av123.com/products_produc...s&product=56.1
They seem like a good deal for a sub/speaker stand combo but might not have enough volume for home theater in a 3500 cu/ft room and could be supplemented with a 15" sub in the future.

I am also looking at:http://www.rythmikaudio.com/servo_product.htm. I would use a sealed box that would be converted from the pos SoundBridge vented sub I bought on woot until I get time to build a nice enclosure. I would close the ports and do some more bracing and mount the new amp on the exterior in a simple enclosure for a little extra speaker box volume.

I have 90/10 Music to home theater listening ratio. SQ is paramount.