Need help on choosing a sub-woofer?

Hi Everyone,

I need help on choosing a sub-woofer. I just started to get into home theater and would really need some good advice. My room size is 2,500 cubic ft. Here are items I currently have:

Pass Labs XA-160.5
Emotiva XPR-5
Emotiva XSP-1
Emotiva XDA-1
B&W 802D
B&W HTM2
B&W 805D
Oppo 95
Samsung UN55C9000 55" LED TV

Here are my options:

Option 1: One B&W DB1 sub-woofer for $3,000 (Demo Unit)

Option 2: Two SVS SB-13 Ultra for $2,995

Option 3: One JL Fathom F112 for $3,200

Thanks in advance!

Ricky