Electrostatic pros and cons.

I recently saw a feature on the program, "how it's made" on electrostatic speakers and it piqued my interest in them. I was wondering the pros and cons of them, their placement, space needs, sound, etc. Any advice would be appreciated.

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Electrostatics are very fast and transparent. Can any woofer match?

Yes but my experience is with a bi-amp set up and woofer array. I think the Sander’s Sound speakers are a great example of a hybrid speaker. The Martin Logan speakers I have heard, not so much.
"Mr Salami" classic response!! That induced a nice laugh here!
Kudos to Duke (and his speakers)

@bdp24 - I don't want to mess with woofers on the Quads at this point. (There's a Rythmik 12" with a paper cone in that room for the theatre system-it's where we watch movies-altogether separate system). 
I have a pair of 15" Rythmiks running with the Avantgardes, and they are pretty dialed in. I'm good. ":)
@inna- I am at a loss for words. Say Wut? 
There is a guy on one of the forums with a fantastic speaker/sub combo: Martin Logan ESL panels, passed off to a pair of Magneplanar Tympani T-IVa bass panels (which make a great sub for ESL's), and finally to an Eminent Technology TRW-17 Rotary Woofer for the bottom octave (20-40Hz) and below. Yes, below. He's one of the few people in the world who can hear the sound of the cathedral or concert hall Classical and Opera recordings are often made in reproduced in his listening room. Total price for the above is far less than that of the big Wilson and other dynamic "super-speakers".