Hell you guys have given me a lot to think of. I guess I have to break the bad habit of mainly looking for the RMS numbers and would really hate to lose $650 on what now seems like an impulse buy. I will still go to check it out most likely but not sure on whether to buy.
While I have your attention:
This item is no longer available. - $549 - free shipping ( Ohh hell looks like it is gone now!! )
or
Amazon.com : SVS PC12 NSD 12-inch 400 Watt Powered Cylinder Subwoofer : Svs Subs : Electronics $749 - Free shipping
or
Outlaw Audio LFM-1 EX Powered Subwoofer - 649 - 100? shipping
I think I'm most curious as to how the two SVS subs would compare as I'm not seeing much difference between them rather than form? Looks like the PB does a little better below 20Hz? For that price it seems enticing. (and new) Sorry noob question most likely I know.
On a different note, I am very handy and the below plays to RMS side bias -
a) Dayton Audio RSS390HO-4 15" Reference HO Subwoofer 4 Ohm | 295-469
b) Knock-Down MDF 3.0 ft³ Subwoofer Cabinet for Dayton Audio 15 | 300-7078
c) Amazon.com : Crown NXLS1500-0-US Power Amplifier : Musical Instruments
Thanks again for taking the time to respond, this has really been and continues to be a huge help.