Polymaker Panchroma Silk PLA Filament 1kg, Shiny Bronze, New and Improved Formula, Better Strength, Printing Speed and Clog-Free. Works in Most FDM and Multicolor 3D Printers.

The most engineering-minded consumer brand in this space. Polylite is their everyday PLA, PolyMax adds impact resistance, and PolyWood nails the timber look. They publish data sheets and actually explain what's in their formulations.