SUNLU 5KG PLA+ Silk 3D Printer Filament, 5KG(6.6lbs) Large Spool Silk Filament, Dimensional Accuracy +/-, 1 Spool, Light Gold

Well-known as much for their S1/S2 filament dryers as for the filament itself. The material catalog — PLA, PETG, ABS, TPU, silk — is broad and frequently discounted on Amazon. Solid all-around option.