On the topic of Canson versus Epson Legacy papers, I too suspected the Epson papers to be manufactured by Canson. I did a profile comparison and they are super, super close for the Baryta. I have a close friend who is well known in the industry and knows Dano and told him my theory and he agreed based a conversation he had with Dano. He also stated there maybe a slight tweak in the coating which is showing up in the profile change. If you can live with the minute difference, the Canson is more cost effective.
-tony