Dan, I just read the article by Mark Dubovoy you are referring too . At the end he says:
…...While the color gamut of the Platine Fibre Rag is quite good, it is definitely not as good as the color gamut of Baryta Photographique. The same holds true in a comparison with Ilford Gold Fibre Silk. Note how the Baryta papers extend further into the more saturated reds, greens, purples and blues.
The real question is whether this is noticeable in practice. The answer isyes. If you are looking for a paper with electric reds, or super saturated blues, this is not the paper for you...... ...
It was maybe true back than, but over the years, papers have changed, print technology has changed and I can say that for now, to me the answer is a definitif
no, for most real life photographs. Most people will not notice any difference just by looking at the same prints on those papers. You can easily
feel the difference between C.Platine and C Bar P.
My opinion is not scientific but based on usage. And I can fullheartly say that Ilford Gold Fiber Silk, Canson Barytha Photographique (and by extension Epson Legacy Baryta, and without any doubt there is a Red River Palo Duro, and others.... ) are strikingly similar (but not identical) in output/gamut, texture, and feel. Print out the same test targets on the different media, and they will be very dificult to tell from one another.
My point being: It doesn't matter which brand you choose, they all have high quality products. ...