Kurtis,
I was just going to suggest that Cap should consider DIY if he can manage a little woodworking.

Buy the Shiva driver used in the Rava for $125 from Adire Audio. Use one of the reference designs on the Adire website. If you don't have an old receiver sitting around to power it, buy a 250W sub amp from Parts Express for $130 - and voila
an amazing sub for very little.

At the moment, I'm working on a passive sub using the Dayton 12'' DVC sub driver, very similar to the Shiva (both made by Eminence).

I would love to get an SVS (Hsu doesn't ship to South Africa) but with $170 for shipping plus the entry level model costing the equivalent of a 10 day holiday to Bali - I decided to go DIY.