I'm wondering if i should get the adire audio rava sub or the new hsu stf-2 that is coming out next week. My usage is 50/50 and right now im running an onkyo hts-760 htib. Even though i like the included sub, i want a sub i can keep for years.My max budget is 450 dollars. I'm also curious as to how the 12" fluance sub sounds, i called them and they said it can go down to 23hz. I somehow don't believe that but i am curious as to how good it sounds.