Spend $300 Canadian for a Polk PSW404 or save up my pennies for another month or two to buy a $1000 (American $ to Canadian) SVS sub? The thoughts that run through my head... I get a sizeable discount on Polk, and my other stuff is Polk. But, I heard that even the cheapest SVS cylinder can level a house. Plus, this thing would be downfiring on the top floor! Would that be wise? Input, please and thank you.