Well I picked mine up yesterday morning from UPS and have played with it a little. And by the way this is my first real subwoofer, other than the one that came with my HTIB. So far I love it! WAAAAAAY better than the sub that came with my s5100. The bass is smooth, clear, and blends very well with the rest of the speakers.
I played a some scenes from a couple movies just to test it out, a couple from The Incredibles, the opening of Star Wars EpII, and The Hulk (2008). I can definitely FEEL a lot more than I could with the onkyo sub and the LFE is soo much better now. It was easily rattling pictures on the wall, my couch, and glasses in the kitchen.
I'll throw some pics up when I get a chance, just wanted to drop in and throw in a quick review.