Hello, I need a new sub to upgrade my old polk sub. I am down to these 2 subs. I have a room thats 17-20 or so with normal ceilings and a big opening. I would like it to go down into the teens and play loud at around 20hz. The main thing though is I want it to be accurate (musical?) Can someone tell me If SVS really has that burp effect when it gets load because I hear that its a one note sub. Since this is my first real sub I thought I could get some help here. I listen to over 90% movies. I will corner load this sub if that helps. which on will be better for me?