What's your budget for a sub? I would imagine you could do better for your money by looking internet direct (SVS, Axiom, Hsu, Epik, etc) than any of those brands. When I bought my Dali's, the dealer flat out told me to NOT get a Dali sub b/c I wouldn't be happy with it. The gist of what I have heard is that European companies' subs generally don't go as low and loud as American ones b/c of smaller, closer together living spaces and the noise "pollution" between them. Here in the states, we've got a little more room which allows us a little more volume before disturbing the neighbors.