Polymaker PLA Filament, Grey 3D Printing PLA Filament 3kg - PolyLite 3D Printer PLA Filament, Dimensional Accuracy +/-, Compatible with Most 3D Printer, Grey

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.