Lloyd,
You should listen to the new top subwoofer from Martin Logan - BalancedForce 212, playing with the CLX . Our distributor has now this system playing in his large room, and a few friends who listened to it said it was on par with the top systems he had in the room.
I love it...I have heard the CLX and was most impressed with many elements, but the dealer could never quite get the full-ness of the bodies and weight. The transparency and space between the images was truly spell-binding...I was captivated. But when I went back to cones, I lost that magic, but got back the weight/body which I also appreciated.
When the dealer added the Descents, they could never quite get it all to work right to take it that quantum leap forward. If the Balanced Force now do that, then this is quite exciting. (For me), panels do something very very special which I really enjoy. but they could not quite deliver the slam/power and fullness of the best cones and so in spite of being captivated by panel magic...I have never owned a pair in the end much as I have tried on at least 2-3 occasions.
Now that the Neolith has been announced...if these Balanced Force subs are as good as it seems...then a pair of subs with these Neoliths could be QUITE a magical AND ALL-OUT setup.