I really need to get a sub because as you all know I am missing out on those sub 80hz tones(I cry about it j/k) anyways I am looking into getting some of the more inexpensive svs subs. My question to you is a preference for a boxed sub or one in a cylinder and how much better is a 25-31pci then the new and cheaper pb10-isd? I would probably be happy with either. I would guess the cylinder can go deeper then the more cost friendly boxed pb10-isd but please let me know your comments. Thanks.