I found for 109 dollars the 15" Rockford Fosgate HE2 1000watt. That has been the planned sub. At walmart though I saw a Sony Xplode 12 rated at 1100 watts for about 90 some dollars. I am not sure what model it was but what do you think would be the better sub? Is the Fosgate quality worth extra? I figure w/ the Sony if I screw it up though I can take it back to walmart.