Boy, if you take all these answers and put them all together you would have one hell of a speaker. However, in the real world there is always a trade-off.
Planers (Maggie's & Logans) tend to have great transparency in the mids, but are damn hard to set up in a real world room and don't have an extended bottom end or great dynamics.
Horns have that engaging lifelike energy, but there's a huge difference between good and bad horns, and they need excellent tubes to sound natural. They also don't image terribly well and tend to be somewhat forward in presentation.
Cones come in all different sizes and shapes and styles. None do it all, so you have to pick your poison. And please remember it's not all in the speaker. The rest of the system matters a lot if you're going to get the most out of what a speaker can do.
For me, I need full frequency response (but a tight sub is acceptable), with realistic and magic mids, and extended and airy and smooth top end without ringing. I need to hear the soundstage and imaging with more music behind the speakers than in my face. They also have to disappear and present that "in the room with you" feeling, and that's as much the room as the speaker.
Enjoy,
Bob
