Who makes the best "Coaxial" Tweeter/Midrange design?

Quad! The 63 and it's descendants are a coax of a sort.

Timlub,

So in theory, Andrew Jones could be responsible for all of the coaxial designs at ELAC, KEF AND TAD...?  

Thoughts?

Best current production has be TAD or KEF. Thiel was also excellent. No longer in production but Tom Thiel, brother of Jim, is re-engineering the crossovers and these should be available by the end of the year at Coherent Source Service, the surviving service wing of Thiel Audio.

Every Thiel I heard was an ear drill, sorry. Maybe it was the McIntosh gear I heard them with? 

JTR. I'm not sure who makes the driver for them though.