First, thanks for all the great advice.
The bottom line is that I decided to go with neither of the choices in my original post. I ultimately decided to order the
SVS PB2-Plus. After taking into consideration the advice I received here together with my own prior research, I contacted Hsu Research and SVS, and I was VERY impressed with the customer service of both companies. I truly believe that based on my experience and research that it would be hard to go wrong with either company. The bottom line is that it would be a quite a challenge to fill my space (6200 cubic feet with two unclosable entryways to another 5000 cubic feet -- not counting space open to the second floor). Because the only mistakes I've made with my home theater purchases have been by trying to save a few dollars, I decided to increase the budget for the subwoofer and ended up ordering the SVS PB2-Plus, which features a 900-watt amp and dual 12" drivers. I won't receive it until the end of July or early August, but I'll post my impressions thereafter.
Thanks again for all your help.
