SUNLU 4KG High Speed Matte PLA Filament, Smooth PLA Matte 3D Printer Filament Bundle, Up to/s Fast Filament Fits Most FDM 3D Printers, 1KG Reusable Spool 4 Packs, Matte White*4

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.