Hi Dennis,
Interesting, some folks really get caught up in the component "brands" used in their 'stuff'....I would be more interested in the tolerances of the components in a design that dictates a particular value and there is a reason for this.
Some lesser spec'd components could easily get out of spec, to a point this is not very important in some circuits and in others is very important.
I can remember measuring resistors to get the ones I wanted in my circuits when it was important etc...not all those gold banded resistors were in spec.
Then there is the "this brand" sounds better than that brand etc...I am not really concerned about this...although it makes fun reading at times

Its more of are we using really good, solid components that meet the circuit design tolerances and how well do the components stay in tolerance over time. Usually this is in circuits that have hot cold cycles etc...in a speaker this is not usually an issue. (me thinks).
From you short response I am sure Jim uses the 'good stuff'.
I just have a wandering mind!!
All the best
Alex