Not much to say other than love the product. Ya all kill it.
I've tried a variety of CF filaments out there on the market. The Proto-Pasta black HTPLA-CF is my absolute favourite. With the right temperatures, it flows smoothly, doesn't jam, makes for picture-perfect prints, and can be used for a bunch of applications where straight PLA just wouldn't work. And the colour is, quite simply, perfect. I do, however, like the slightly greyer colour of the Formfutura Carbon PETG (which is FAR harder to print well with), so I thought I'd give this one a whirl and see how I liked it. The good news is, it flows just a smoothly as the black. I found no issues with printing in this colour. Unfortunately, it comes out a little flat. The grey colour lacks the pizazz of the Formfutura, and even the black HTPLA-CF, to be honest. And it doesn't hide layer lines as well as the black, so the prints come out looking a little rougher. More like a matte grey PLA, but with better overall stiffness and texture. It's not a bad product by any stretch, and if you're looking for CF that will print in a dark grey and be a straight matte finish for parts (I've printed some BIG machine parts with this), then this is just what you want. I'm not sure I'll use it very often, though. Mind you, if they tossed in the slightest hint of glitter, I'd be all over it.