My home theater consist of good quality, sort of middle of the road equipment. We use it constantly for movies and tv. I am looking to add a serious, powerful sub-woofer. Although my speakers are powered towers, I have noticed they don't produce the "punch in the gut" bass that I have felt and heard in many showrooms. I am looking for opinions from people who have owned a good sub-woofer, not what the web is saying as the next great thing.

My room is 18' x 18' with a vaulted ceiling. It has an opening about 8ft wide on the left wall towards the back corner. I do have acoustic treatments on the back and right side wall. The back has an external door and the right side has windows, so I added heavy insulated
curtains to both sides. I may also add a curtain behind my tv and fronts. We have two couches and a large chair and the floor is carpeted.

My system consist of a 65" Mits HDTV, a JVC RXDP10 reciever, 7 Outlaw Audio M-200
mono block amplifiers, and Infinity speakers. My fronts are the IL-60, 3 way with a 12"
500 watt sub in each. My side surrounds are IL-50, 2 way with a 10" 250 watt sub in each.
My rear surrounds are IL-10, 2 way bookshelf speakers.

My budget is $ 1000 to $ 2000

Thanks