Polymaker Polymax Tough PC Filament, Black Polycarbonate Filament 0.75kg Cardboard Spool - PC Filament 3D Printer Polycarbonate Filament, Tough & High Heat Resistant

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.