TAD was my prefered driver - until recently. I wanted to test whether or not the TAD drivers could really out class a lessor expensive set of drivers in a well designed system. A subjective test was run with 16 subjects comparing TAD's to B&C's in identical systems (optimized crossovers of course). The results did not indicate that the TAD's were worth the extra cost. In fact they even indicated the opposite although there was not enough data to be sure of that conclusion.

So now I believe that once one has a truely good system design, the actual components, as long as they are of good quality, don't really enter into the equation.

This is once again not the prevailing philosophy, and until recently was not even mine. But I am not going to ignore the mounds of data that have accumulated indicating otherwise.