Honesty don't know, I always send my pics to a friend who attends School of Visual Arts in New York. I assume he's using photoshop, or 3D Max? I know he's excellent at both. I'll ask when I get the chance. Well looking at it side by side, it looks identical in color. The nice thing the contrast is much better on the Acrylic print, which makes the picture pop. On the website they explain what kind of printer they use, and metal paper. If Costco gives the same information on their set up, you could probably get a good comparison of which one is better.