I also considered stock 3D marketplaces, Blender asset libraries, Envato, Sketchfab, and free 3D model sites.
I chose Threedio because the models feel more consistent and production-ready. With many other marketplaces, you spend extra time searching, checking quality, fixing materials, optimizing files, or trying to match different styles. Threedio is better when you want a clean, matching visual system for videos and design projects.