I have a sbs 870. The reason I went for this and not the AOW is that the AOW is in very high demand and ussually goes for a bunch of dough.
My sbs started as a police model trade-in that I got into really well. I then sold the 18 inch barrel and stock. This gave me enough money to buy a 12.5 inch barrel from scattergun tech.
I think in the end it cost me about the same money, as the AOW, but the difference is I can put a stock on my SBS!!!
something to consider.
I think Stockman Sporting goods can hook you up with either though. I don't have a number, but Doug Stockman is at most of the big VA shows.