We have several driver options for the π loudspeaker, and a couple of them are in the same quality/price range as the Beyma 12BR70. The Delta Pro driver would be a good choice for that price point, for example.

When this thread was started, it was prompted by the announced obsolescence of the Eminence Definimax 4012HO. For many years, that was the top-of-the-line upgrade option for the three π loudspeaker. It had a cast frame, well damped cone and flux stabilization. So I was looking for a part that had those advanced features to replace it. I settled on the B&C 12PLB100 for that role.