Perhaps the punch that you desire is due to some exaggerated frequency response in the mid bass range - fun but not accurate. Axiom subs are known to be highly accurate through their frequency range, thus they sound very 'musical' (for want of better term).

My twin EP-800s are the best sounding subs that I've ever heard - both for music and HT. With the way that they effortlessly shake my house & contents to its foundations, I can't imagine needing or wanting any more...

TAM