Sub for under $400

[Mordir]

I'm looking to add another sub to my set up. I currently have the set up listed in my signature. I was thinking about adding another Polk 505 but figured I would see if anyone knew of any deals on a better sub for $400 or less. I can get the 505 for $229 so the performance of the suggested sub needs to be quite a bit better to justify an increase in cost. I am also tempted to hold off another year and get something with a bit more oomph but please keep your suggestions to subs under $400 for the moment.