I'm a big fan of how this polishes. Not the same as pure metal, but then I don't expect it to be either.
I am trying out some trumpet mouth pieces with this. Great feel prints fast, sands really easy and gives that nice shiny look. Be warned it is brittle. I have been tuning the slicer settings and really getting a good solid print now.
I bought this to try out its increased weight versus other filaments. It really does feel a lot more substantial. The only complaint is I don't think its good for high detail parts unless you have the means to do a lot of polishing to bring out the metallic look. But for many simple objects I'd highly recommend it.
Too brittle, I didn't finish a print. The finish is nice, but it looked just like the bronze.
I find this one to be more brittle and less forgiving than the steel. The feed line into the extruder snapped twice in mid-print. The results aren't as good in high resolution (.1mm layer height) either. Post processing does not remove layer lines as well as the steel. So all in all, Steel > Brass.