Sorry for the slow response. The seller turned out to be a great guy and was honest about the sub. It really is like new, so I purchased the sub and brought it home. Just the physical size of it alone is impressive compared to the STF-2. You gents were correct, it is a very noticeable difference in performance. I am quite happy with the purchase. I still need to run Audyssey to get it optimized, but this thing rocks. I will see if I can get a pic later.
Thanks again everyone. And if anyone would be interested in a STF-2 let me know.