I've had the same problem. I finally decide to go for the the d811s and I can't find it. I'd rather stay away from ebay unless I can get it for substantially less. I've got 2 BB's in my area and neither has any in stock and today is the last day of the sale. My local CC doesn't carry the d811s...
I purchased a Sony sm40 subwoofer, I've heard that adding polyfill will make it sound better. I'd like to try it out but I'm not sure where I can get it. Thanks