The best tweeter design

I"ve heard them all in one form or another.  It's all about implementation.  Plenty of threads on here about best 'mid', tweeter, woofer etc...

I personally feel that the reason speakers sound better now days is due to the better quality materials designers have to use.  The problem is that too many of the designers (my opinion only) don't think past what they know and just make the same mistakes with a better quality material.  Again, it's all about implementation.

The best speaker I've ever heard is the Vandersteen 7 Mk 2.  He has figured out a way to marry the right carbon fiber cloth with an in house made balsa wood core that the carbon fiber sandwiches with.  It's an expensive process, just like using other materials, but he gets the strength to weight ratio down just right and has married these carbon fiber drivers to produce the most coherent speakers "I've ever heard using multiple drivers.  I wonder why so many folks over look such a great design as his drivers are rarely mentioned when talking about 'best drivers'.

Again, there are plenty of outstanding speakers for all ears out there, but for me, Vandersteen has just nailed it with his carbon fiber (he auditioned a lot of different cloths before selecting what he's using) with the balsa wood (CNC machined) core.  Give near perfect pistonic movement that is a must when reproducing sound. JMHO

As Suncoast posted, it's about the material and speed matching the other drivers in the speaker.  That=implementation.  I personally haven't like the plasma system as there is a disconnect and lack of coherency to MY ears.  Many love them, but I always wonder about 'special' tweeters. So many who have them, market the tweeter and not the speaker as a whole.  Most to me, have lacked a coherency that is needed in order to trick our brains into thinking we are listening to 'live music'.  

As Suncoast knowns I haven't spend much time with recent horns and will when I get down to Sarasota to visit family again.  

I too hear the ringing on so many of the exotics out there.  That and the coherency of the Vandersteen line is what drives me there. I never was into them until fairly recently.  I still really like some other speakers. Heck the Tidal's with their 'black diamond' tweeters can sound awfully musical and enjoyable.  I just expect a ton from speakers costing over 10k a pair regardless of what materials they use.  That's just me.