Any more info on "Regnar"? Imin2u, good luck with the replacement/upgrade which I would think won't be easy. Maybe you should just have them restored?
Some of my best budding audiophile memories were hearing DQ-10's with Apt Holman preamp, Quatre Gain Cell power amp, a Thorens turntable with the Infinity Black widow arm and a Denon 103 moving coil cartridge, circa 1979. Later, I worked for a Dalhquist dealer after school and in the Summers.
For similarly open midrange and imaging, there is a recent thread on Apogee Stage speakers that you might want to check out.
Maggies, and ML's, IMO, are a different kettle of fish.