I have a question? Why are you going with a hsu(this is not a knock on hsu) sub with the svs sbs-01's when better deals are offered by svs with their complete system packages. Currently, they are overstocked on white and silver
http://www.svsound.com/products-sys-sbs_silver.cfm
The svs pb10-nsd sub is FAR superior to the x-sub and therefore a better option for home theather. I know the av123 products get a lot of attention for build quality and looks, however IMO the sub is without question the deal maker between the two.