Amazon.com: OVERTURE PLA Plus (PLA+) Filament 1.75mm PLA Professional Toughness Enhanced PLA Roll, Cardboard Spool, Premium PLA 1kg(2.2lbs), Dimensional Accuracy 99% Probability +/- 0.03mm (Black) : Industrial & Scientific
Amazon.com: 3D Solutech - PREPLAWHITE Real White 3D Printer Premium PLA Filament 1.75MM Filament, Dimensional Accuracy +/- 0.03 mm, 2.2 LBS (1.0KG) : Industrial & Scientific
Filament review: BIQU PLA matte and PLA Premium filament review - The first filament production from BIQU | Sebastiaan Dammann
PLA Premium - Spectrum Filaments
Amazon.com: Vulkankraft Premium Solid Black PLA Filament for 3D Printing, 1.75mm, 1KG, Testing Pack Available, Less Prone to Warping, High Printability, Reduced Chance of Clogging. : Industrial & Scientific