Replacement for Maggie's?

Agree with Elizabeth and others that the 3.7 is the obvious choice. It does everything the 1.6 does but better. Or even the 20.7, if you can swing it.

Ejlif, what were you powering your 3.6's with? I've heard them play quite loud, certainly in the range of dynamics.

Usually, people who want more slam or extension in the bass add subs, or, increasingly, Magnepan's DWM woofer, which can be used to increase bass output in larger or "planar unfriendly" rooms without smearing the bass as a dynamic sub can.

VMPS speakers (tho owner just passed away) offer IMO much of what is enjoyed about Magnepan or other planars but feature dynamic woofers and reputation for great bass. Brian made sort of no nonsense speakers that while modest in cosmetics offer great performance, his used speakers offer great audio bargains.
I am in Ohio (Browns victim lol) if you want a demo. Cheers

I've read some comments on the web that claim DeVore speakers are very "Magnepan like".

Much of the "feel" of the Maggies is due to their dipolar radiation pattern. With proper placement, the reflection of the full-spectrum backwave off the wall behind the speakers arrives late enough to be highly beneficial in terms of timbre and richness, without any downside. You might look into other technologies that give you additional spectrally-correct reverberant energy, but are better suited to deliver bass impact and dynamics. For instance, the polydirectional Shahinian Obelisk comes to mind.

Duke
dealer/manufacturer.

look into king sound