Best Tweeter for DIY project


I am looking for one of the smoothest, silkiet, and unfatiguing tweeters out there...any suggestions?...Would ribbon tweeter be better?
kasboot
Isotar tweeter. Its the tweeter used in the Sonus Faber Extremas and costs a hefty $1000.00 each but are incredibly smooth.
perfectimage, isn't it esotar? i'd also consider the raven tweeters, & the accuton (thiel & partner) ceramic drivers.
Anyone have any experience with Raven or Cabasse tweeters? Both have VERY high sensitivity(96-98 dB/2.83V). Do they exhibit any tendency toward brightness, breakup(they shouldn't), harshness, etc(all the problems that soft domes solve). I stopped building speakers right about the time both became bigger in this country. This is my main concern for these tweeters. One day I will build a high sensitivity speaker, specifically designed for SET amplification. Kimon Bellas(of OrcaDesign - US parts division of JMLabs) is responsible for bringing Accuton, Cabasse, Focal(don't like their tweeters), and Raven into the US. Hard to find a better guy in audio than "Frogman". The Accuton is a delightfully smooth sounding tweeter. A serious concern is the lack of durability of the Al2O3(alumina) cone. Very brittle, and not able to be repaired. Although, if do have one break, you can buy a replacement cone, as opposed to a whole new tweeter.