I've had a single Titan II LE for over a year and absolutely love it. It is seamless. I've wanted to try a second unit but didn't have the extra funds. A couple of monhts ago a friend got one of ACI's new Force subs. We spent a couple of weeks playing around with it and concluded that it sounded a LOT like the big brother. So I started experimenting with stereo subs. At first the results were not an improvement. However, after changing room placement and tweeking the settings, well let's just say I now know that I'll be getting a second Titan II when I can afford it. We've found improvements in soundstaging and bass detail. I will add that I would definitely rather have one "great" sub than two "good" subs.
