I have only used one other CF filament and that is Priline CF polycarbonate. This material prints well, but thinner prints can be quite flexible. If you prefer your prints to be hard and rough at the same time, this is your best bet. In fact, it's worked so well for what I use it for that I'm not sure I'd want to take the time to try any of the cheaper CF PLAs from other brands.
HATCHBOX 1.75Mm Silver Silk PLA 3D Printer Filament - Dimensional Accuracy +/- 0.03Mm, 1Kg Spool
32 Review
High-Quality Melca Black PLA 3D Printer Filament, 1Kg Spool, 1.75Mm Diameter With Precise Tolerance
30 Review
WYZworks 1.75Mm Premium PLA Filament - Antique Rosy White/Skeleton | Dimensional Accuracy +/- 0.05Mm | 1Kg/2.2Lb | Multiple Color Options
30 Review
YOYI 3D Printer Filament - PETG 1.75Mm 2.2Lbs(1Kg) Spool, High Accuracy +/- 0.03 Mm, 100% New Raw Material!
32 Review
π΅ IFUN 3D Rapid Resin - Low Odor Photopolymer Resin for 405nm LCD 3D Printer - Fast Curing, Standard Rigid Formula - Sky Blue, 500g
5 Review
Economic Ender 3D Printer DIY Kit With Resume Printing Function, Large Printable Area Of 220X220X250MM By Creality 3D
18 Review
Flashforge Adventurer 3D Printer with Detachable Precision Leveling System
6 Review
π¨οΈ ANYCUBIC Assembled Innovation Off Line Printing: Streamline Your Printing Process with Cutting-Edge Technology
5 Review