Oh, look at those little 27" woofers. Personally, I'd prefer 63" woofers by Diatone (Mitsubishi) myself or a the very least the comparatively compact 31.5" woofers (again).
Actually, as for those Opals, I wonder how good the bass really is. Sure, there's no replacement for displacement, but it appears that most large woofers made today are designed for efficiency in PA systems and sacrifice extension that would be desired in home audio settings. Sure, those 27" woofers look impressive, but what's the point if a few quality 12"s provide lower distortion and deeper extension?