What's the best mid-range driver available?


I'm thinking of trying the DIY route for a pair of full-range speakers. In your opinion, what is the BEST mid-range driver available and the best place to buy it?
Thanks for all your comments for the tweeter!
Thanks and happy listening!
myraj
yes you *can* buy it seperatley. and you can buy the speakers as a kit. they aren't as good, but they're still good.
and they're not too expensive, especially when you consider that they come with multiple top-notch amps as well. if you work it all out, they are really quite a bargain.

15k for a three-way speaker, with the best mid-range in the world, a 50 liter enclosure, one of the best crossover networks available, and *six* seperate power amplifiers driving each driver individually. not cheap, but very reasonable.
Lazarus There is no commercial speaker worth 15 for me. With 15 i could get a superior speaker kit (Skaaning + Raven 3) + superior amp + superior digital (superior = "not your everyday run-of-the-mill stuff") for under 15. Now its true there are 15 and up speakers out there that are'nt worth it. I never consider buying a speaker that weighs more than say 100 lbs. each. The 6 amps sounds too complex for me. And can you give me their weight?
you can get fantastic stuff for that amount, true. but not superior to the atc. it's expensive, but still a good value. the speakers ar very heavy because the amps are affixed to the back of the speaker. there are six power amps, but it isn't at all complex because they're all built into the speaker. you only ever see them as a small protrusion from the back of the speaker. just hook up your preamp using balanced interconnects to them and that's it. saves space on your rack, too.
I don't think you follow me. Why should i invest in a superior amp and then have the output channeled into a speaker amp??? You are sending the music through too many pathways... superior amp + superior digital + superior drivers + superior xover = ? (lets keep the money factor within reason..15 is way more than necessary)