Re Paul Young Para-15 - Brian Creek

Here is the Para 15 from the Young Company web site.  They pretty well cover
the rod's virtues.

Brian


Parabolic 15,
8"0" - 4 oz. - 15/64 Ferrule,
.070 & .078 Tips
5 & 6 Weight Lines
Medium Fast Action with .070 Tip
Modified Parabolic Action with .078 Tip

For a time called the K.T. Keller, after the former General Motors CEO, and
loyal devotee of this rod. The Parabolic 15 is what we believe, as do
countless others, to be the most sensational rod for all around trout
fishing ever created. Years of engineering and testing by some of America's
most noted fly fishers went into its design. With the .070 tip, the Para 15
virtually covers the field of light terminal trout fishing. The .078 tip of
a different taper, enables its user to efficiently use nymphs, streamers,
and attractor patterns with ease.

The Para 15's proving grounds were the larger river systems of Michigan,
Wyoming and Montana, where it became critically acclaimed by all who put it
to practical use. With its renowned power, graceful presentations, and
multipurpose versatility, the Parabolic 15 remains as one of fly fishing
history's most significant designs.