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

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.