Are Martin Logan’s what they used to be?

...The ESL panels on the old ones were held by a frame solid, not flapping around in the breeze (say goodby to solid imaging) useless to spike these new ones they still flap...

This is nonsense. The current Masterpiece line has a new panel frame which is ROCK SOLID. Even my older Summits had minimal "give" in their "air frames", vs. the (slightly) wobbly Aerius i’s, which were composite wood.

The new models also have superb integration of the woofers with panel, plus ARC (Anthem Room Correction) for optimizing overall bass response for the room.

Actually, Roger Sanders *DOES* claim to be the inventor of curved electrostatic panels in the late 70's (see his FAQ page here), but he subsequently decided that flat ESL panels sounded better.  Gayle MARTIN Sanders (along with Ron LOGAN Sutherland) were the co-founders of Martin-Logan.   I believe their first ESL, the Monolith, actually featured a flat panel, but they subsequently embraced the curved approach.  Both approaches have their merits.