Infinity Sub?

Wesmo Posts: 74
At CC, they have the Infinity Entra Two 12 inch sub on sale for 349.00.....the same price i paid for my PSW450 less than a year ago. I was wondering if the Infinity sounds better than the polk since it has a more powerful sub. If it is, i'll trade my 450 in at CC and get the Infinity basically for free.