dynaudio silk domes, but they're a part of dyn's 3-way separates.
I also had some old 1" silk soft domes fromOrion/Peerless that I liked but I went through a lot of voice coils on those. Orion's hard domes were hardier, but more useful for higher frequencies. I had the hard domes filtered for 15KHz+
i just figured i would deal with the tweeters that come with a component set that i go with, but just woundered if there's some nice one's out there that i could add later if i wanted.
also, if i did do that later, would i be able to hook them up on the component crossover, or should i run them on a different one, or just off an amp with a hi-pass Xover??
just stick to the tweeters in teh component set. They're timbre matched to the midrage drivers, and to the passive crossover network that comes with them. you can't add other tweeters to those crossovers, no. Doing so alters the response of the crossover by changing the load presented to it.
Don't worry about separate tweeters unless you plan to build an entire fully active system using all indifidual speakers. It's not an easy thing to do. I did it with one of my cars, and I ended up having to hand build the filter network for every one of the 18 speakers in the car. That was a lot of capacitors, chokes, wire, solder, heat shrink tubing, and math.