What's the best mid-range driver available?

ALE drivers from Japan are cost-no-object products. Their 7550DE lower midrange and 4550DE upper midrange compression drivers are approx. $2,500 each without horn. Their 1260 upper bass/lower midrange driver is $10,000 each. Adding an appropriate Tractrix horn (Sierra Brooks) could add another $2k each.

TAD's 4001 compression driver retails for $1,666 each and is no slouch either.

Both of these make the ATC look/feel like a small toy.

Hi Sean,

I'm using Innersound Eros in my bedroom system and there is definitely something to be said for electrostatics and midrange quality, especially for guitar, harpsichord, and other plucked instruments. But to hear a trumpet well-reproduced, I have to either crank up my N801's or listen to Magnetar's NE TAD/Altec-based system.

The ALE drivers are featured in the latest version of the big French mansion system at the aca.gr website, having displaced all the JBL pro drivers. That ALE compression driver with the 200 lb. Alnico magnet is a monster.