I haven't owned Maggies but I remember immediately being impressed by certain aspects of the sound (they generally sounded great).
I'd owned Quad 63 electrostatics and while I was first in love with the transparency and boxless sound - they sounded so different it was part of what got me back into high end audio to begin with - over time I grew frustrated with the weightless aspect of the sound. The music just didn't seem to activate the air in a dynamic manner, so the effect was like having a big super clear window on the performance, but it was always happening "on the other side" of the speakers in another room. I could hear everything, but not feel the sense of air being moved. I got into dynamic speakers and have never looked back (that same weightless quality is still what I hear in every electrostatic, including the mega expensive Martin Logans (once the woofer passes to the panels).
However, Maggies seemed to be a great in-between sound: they did that boxless panel-like presentation and transparency, but with more density
and "thereness" to the sound.
I also always liked the tone of the maggies I heard - though I know some can point out a metalic tinge here or there, mostly I found them sort of warm-toned and consonant with acoustic instruments.
In contrast, the virtual definition of "transparency at the cost of tone" were the Apogee speakers. Every Apogee I ever heard...yuck!...sounded metallic and icy to my ears.