I looked into all of the recommended subs and the best deal I can find was the BIC H-100 on overstock.com for $280 shipped. However, I do not like that it is front firing because it will be used for home theater. While I was looking into this I came across the BIC America BICV1020 Venturi 10-inch 160W Subwoofer also on overstock.com. This is a downfiring sub and the specs look better. It is only $170! Does anyone have any info on this sub? the specs look pretty good, and I think it might be better for me than the H100, especially since it is $100 cheaper. Will this be better than the original Sub-120 that was recommended for me?
Pick up the Parts Express SUB-120 before the BICV1020... $20 less and more sub. I wouldn't worry too much about front vs down firing.
If I had a budget of $350, and I was looking to pull the trigger NOW I would get the eD A-350. It's a 12" down firing sub that I have heard no one say anything bad about, only good.
Sure you could find a PB10 used in the same price neighborhood, but will it be shipped at the price you find? Most likely not. Is the PB10 and eD A-350 equivalent in terms of performance? I dunno, but I would pick up a new eD before the used SVS.
To me it looks like you have two choices:
The Parts Express SUB-120 at $148 shipped for giving the best for under $200 or the eD-A350 for $350 shipped. You know that both are new with warranty, you know exactly what the cost is, and you know that you can order both NOW. Waiting on a used PB10 is exactly that: Waiting.