If only the speaker you described existed! I agree that planar magnetic speakers (basically, Magnepan) don't have quite the transients of an electrostat (although the 3.6 and 20.1 have true ribbon tweeters -- you don't like those?)
You don't like hybrids? Neither do I, but you might just give a listen to the new Martin Logan Summit. It does have woofers, but they are now self powered, and the panel is constructed using a new automated technology that makes them more efficient using a smaller panel.
If you want to wait (not much longer now) the Apogee full-range ribbon is about to make a comeback under the ownership of a fellow in Australia. In their original incarnation, they were considered the best ever, and still are by many.
I can't really recommend any box speakers that do what a stat or ribbon can do. The one absolutely amazing exception IMO is the Eban X-3 or X-4 (currently reviewed in Absolute Sound) that I heard in Jim Aud's room (Purist Audio Design) at CES 2005. He's the only person I know in the US who has (had?) a pair! I kinda wondered what his buddy, Albert Porter thinks of them (I haven't heard the Dalis, Albert's current favorite.)
Their website is: http://www.raidho.dk/eben/index.htm
or in the US: http://www.dyanaaudio.com/
Or, you you could buy a used pair of Martin Logan CLS-IIz's or original Quad ESL 57's, and add a very fast sub (like my Martin Logan Depth.) See my system or Greg's system (Gregadd).
Well, those are my "ideas" -- I do understand the dilemma however ;--)
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