I've used 4 spools of this so far in black, red, and blue. It prints smooth, little odor, and adheres quite well. ABS isn't typically easy to print compared to ender style printers and requires a heated bed and a warm chamber so anyone that is saying this warps is using a sub-optimal setup and should be largely ignored.Blue is a bit dark. Red is on the lighter side, but still a good color. Black is... well... black. Nitpicking over.