I’m not suggesting these papers are direct competitors, but the texture is similar, so I thought it would help to show these papers differences to help others make an educated purchase.
Here is a quick comparison of these two papers using a color image. I chose this image because it has a very saturated red area, blue area, green area, and a large grey/white area as well. First things first, here is digital file of the image printed. It was taken off the coast of Port Denarau, Fiji; with a Canon 5D Mark II, Canon EF 300mm f4L lens and B&W Kaseman MRC circular polarizer:
Now for the scans of the prints. Definitely check out the scans at full size, you can clearly see that the Canson texture is more “patterned” than the Museum Etching. Not a bad thing in itself, but your personal taste may vary. I don’t have anything special for a scanner, so I can’t say that your monitor is displaying what the prints exactly look like, but you can tell the differences of the papers relative to one another at least.
Prints were done with a freshly calibrated iMac, on an Epson 3880 using manufacturer recommended settings and ICC profiles
The top print is the Hahnemuhle Museum Etching, the bottom is Canson Montval Aquarelle
The Hahnemuhle had much warmer greens, which I felt didn’t do the scene justice, but because of this warmth, the shadowy areas of the mountains appeared less flat. Also, the clouds in the Hahnemuhle were clearly warm. The Canson had better blue ocean tones, cleaner clouds, and cleaner greens. The Canson did have a flatter look in the shadowed areas, but overall the print has more pop. If you look at both scans at full size, the sharpness is a moot point; they are both very sharp for their texture.
In the future I would choose Canson Montval Aquarelle over Hahnemuhle Museum Etching for color landscapes.