I test printed Milky Way images on a trial roll of Breathing Color 17M Satin. On the upside, the texture of its weave is less than Breathing Color Lyve weave. The smoother surface shows the detail of the Milky Way better. Color gamut and Dmax don't appear to be any better than BC Lyve. On the downside, the satin finish of 17M is way too reflective. In a bright room, especially in direct light, 17M is so shiny the MW image is hard to see. Mounted on shady wall, it's fine. I was able to knock down the sheen with Timeless Satin varnish but I might as well continue printing with a matte canvas.
After this trial, I'm convinced to stay with a matte canvas but will now be looking for canvas for a smoother finish than Lyve. A colleague at a local print and frame shop has been using Elements Fire Opal Bright White canvas available from Lexjet. It's not a marquee canvas but the weave is smooth and his images look good. If you have other suggestions, please let me know. For example, Sunset Select Matte.