I have been sucessfully using Definitive Technology (original) supercube subs for years, they are the best I've found for ultra deep, tight, robust and musical bass. On occasion I like to let it rip with hard rock and metal, the super cubes are unflapable, they can handle anything you throw at them and always stay composed (no speed limit). I'm considering switching to Vandersteen 2WQ but wih 8" drivers I'm a little concerned they might not be up to the task, can anyone comment on their ability to stay composed when pushed during intense passages?