What are Your Favorite Tweeters?

Focal (JM Lab) - Their inverted dome tweeter.  

I have a pair of JM Lab Mezzo Utopia speakers, which uses a single front firing inverted dome tweeter, and the extension, detail, and smooth sound is very catching.  I also have a pair of Von Schweikert VR-6 speakers, and these use a pair of these Focal inverted dome tweeters, one firing forward, and another in a dipole configuration that fires to the rear to create an ambient affect.  My VR-6 speakers are heavenly.  Their airyness, extension, smooth non-fatiguing sound, and large soundstage is simply fantastic.  

Beside my Mezzo's are a set of VR-4 SR Mk III using the Dynaudio silk dome tweeter, I think.  Oh Lordy!  These silk domes, while not as detailed and fine sounding as the Focal inverted domes, they are also very smooth, non-fatiguing, and have such a great airy and expansive soundstage - love these a great deal.  

Electrostatic for sure.   Better, full range.

+1 for inverted dome beryllium tweeter ! 

I love Eton's HD tweeters that are a ceramic and magnesium composite.  They are surprisingly natural sounding given the hard material.  My feeling is they give me the detail of beryllium but without a metallic edge that needs to be dealt with. I use them in my Blackthorn speaker.  

Mundorfs AMTs are brilliant. I have been experimenting with these and detail an imaging is wonderful.  

For lower priced, high mass, you have to love Peerless corundum tweeters.   

The ribbon tweeters in the Magnepan 20.7's are very hard to beat, but I can't argue with the high end of the Sound Labs speaker. It is as natural and detailed as I have heard. IMHO point source tweeters make cymbals sound like castanets.